The 1979 Articles Most Cited from 1979 to 1981. 1. Life Number
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The 1979 Articles Most Cited from 1979 to 1981. 1. Life Number
Essays of an Information Scientist, Vol:5, p.575-590, 1981-82 Current Contents, #26, p.5-20, June 28, 1982 The 1979 Articles Most Cited from 1979 to 1981. 1. Life Sciences Number 26 1une 28, 1982 This is the latest in an ongoing series of essays that identify articles which became highly cited shortly after publication. Papers that receive an immediate burst of citations often represent the “hot spots” of science—areas of inquiry that are presently of special interest to researchers. The previous two essays in this series identified the 1978 papers that were highly cited in 1978- 1979.1 z This essay presents the life sciences papers of 1979 that were highly cited in 1979-1980. Also listed are 1979 papers that would have been included if we had considered 1981 citations as well. The second part of this essay will cover the physical sciences. The 102 papers in this study are listed in Figure 1, which, in addition to 19791980 citations, lists 1981 citations as well. As before, the articles are segregated by subject area, and then listed alphabetically by first author. We hope this arrangement will discourage invidious comparisons. All of the papers in Figure 1 are undoubtedly interesting, but many more 1979 papers not included here will eventually become highly cited. What makes this group particularly interesting is the immediacy of their impact on the scientific community. Of the 4,000,000 papers or books cited in Science Cifafion lndex~ (.SC’I@) each year, most receive one or two citations in a two-year period. By comparison, the average paper in this study received 60 citations—nine in 1979, and 575 51 in 1980. The most-cited paper received 192 citations, while the least-cited had 45. A new feature of this study is the inclusion of research front data. In previous essays,j I have explained ISI”’s clustering technique for identifying new research fronts. Each cluster is associated with a group of co-cited core papers. The research front is the group of current papers that cite one or more core papers in the cluster. Co-citation clustering is the basis for “research front searching, ” available through our online ISI/BIOMED~~ system.4 In Figure 1, where applicable, we have identified the ISI/BIOMED research fronts with which each paper is associated. The names of the research fronts themselves can be found in the ~ndex to Research Fronts in ISI/BIOMED. s The very fact that nearly all of these papers turned out to be core papers in 1980 or 1981 research fronts in ISI/BIOA4ED is interesting in itself, because it demonstrates that the system has dynamically responded to any paradigm changes [hese advances may represent. In all, 121 research fronts are represented in Figure 1 and in the supplementary list of papers m Figure 2. We have listed in Table 1 names of those research fronts whose :ore papers include two or more papers In this study. All of the papers in Figure 1 received many more citations than the minimum :hreshold of 12 used for inclusion in an 1: The 1979 hfe !cience~ art]cle$ most cited m 1979-1980. The authors’ addresw follow each citation, as do the code numbers of the ISI/BfOMEDT~ research front specialtiesfor which these are core papers Figure Molecular Genetics—Nucleic Acid Structure 79&fuJ ToIal I 80 44 7 79 Chtions 81 45 55 43 so 71 Xl I09 >9 Ltarrell B G, Ikmkier ,4 ‘T & [)rouin J. ,4 dit’f’eren[ genetic code !n human mifochondria. Va/ure 282:189-94, 1979 MRC Lab. Mol. Biol., Cambridge, UK. 80-0105:”81-0140. {’ameron J R, Loh t Y & i)u}ii R W. Evidence for tran~poji!ion 01 di,perwd repel itlw DNA Iamihcs in yea~t. Cc// 16:739-51, 1979. S[anford Um\ ., Sch. hfed., Stanford, C-A. 80-0[73; 81-0190 (,anmm k, () ’Hare K, Perrin F, LePamec J P, Benoist C, {’ochet M. 16 48 64 17 11 78 49 13 m 5? ~~ flreathnach R, RoJal A, Gmpirr A, Cami B & Chambon P. [)rganixil}on and wquencw at the 5 end o! a cloned complete oialbumin gene. Nuiure 278428-34, 1979. CNRS, In\(. Chim. Mol., S!ra\hourg, trance; CNf?S, Inst. Pasteur, Paris, France. (Lruss D H, Criiter F & SprinA M. C ompllat!on of IRNA \equence\, .Auc/. AcK/. Re!. 6: R I -R 19, 1979. ‘lax Planck lnst., Dept. Chem., Gtitllngen, t RC,. Hensgens 1. A M, (.ri}tll 1. .4, Burst P & Lfm J l.. Nucleo!ldc sequence O! [he mitocbondrial ~truc!ural gene tor \uhunlr 9 O! yeast ATpaje complex. Proc. \u/. .Icud .Sc/. l~S 76:1663-7, 1979. Lln!\. Am\ter darn, Jan Swamrnerclam lnsI., .\m\rcrdam, the Netherlands. 80-0105;” 8 I-0140. l.umedicu P, Rosenthal N, Efstratiadis A, [;ilbert W, Koludner R R. The <truc!ure and evolutmn of’ the two nonallelic m! prcproin~ul!n genej. Cc// 18:54 S-58, 1979. Hartard Llni\,, fl!ol, 1 abj. & Sch. Nfcd., (’fimbridge; S!dnci Farber Cancer In\ f., Boston, %iA. 80-0518; 81-1322. & lizard X3 164 192 115 Nakmrishi S, lnoue A, Kits ‘T. Nakiimura M, Chang A (’ Y, Cohen Nuclemide wquence 01 cloned cf3NA for boklne corttcot ropin-61]potropln precur\ or. Vuwe 27X:423-7, 1979. Kyo[o [I”), ,, DCPI, Med. C’hem,, KyoIo, Japan; Stan f’ord Lln!$., Sch. Med., \ \ & >uma 5tiinlord, C’A >. 80-1519: XI-12(M. 4 44 48 77 Peattie 15 43 58 43 Post L E, Strycharz G D, Nomura M, Lewis H & Dennis P P. Nucleotide sequence of the ribowmal protmn gene cluster adjacent to [he gene for RNA polymeraw \ubun!r /3 ]n Eschemhm cob. Proc. .%!. Inst. Enzyme Rcs., .4cad .Sc/. L’S 76:1697-701. 1979. L’n]v. Wi\con\in, hladlwn, WI; Univ. British Columb!a, Dept. Med., Vancouver, BC’, Canada. 80-1379. 6 42 48 60 Potter f)ir.w chcm!cal method for wquencing RNA. Pro<. ,Vut, .Acad. SC{. 1 .S 76: 176(J4. 1979. Har\ard [I nib ., Dept. Bmchem. hlol Biol., C’ambrldge, NIA. 80-1440 f) ,4. S S, flrorein W J, Dunsmuir P & Rubin G M. Transpo$itlon elernem$ 01 4/2, cwu and 297 di\perwd repea[ed gene tamll]es m Dr[>\oph]la. (’?// 17:415-27, 1979. Sidney Farber Cancer Infl., Depr. Ln]\., Sch. \led., Boflon, MA. 800173: Tumor f3iol.: Har\ard 81-01S0. Rosenberg M & Court 1). Regulator) sequences In}olved in [be promot]on and Icrminatlon of RNA tran?cr]ptlon, .4nnu. Re~s. Genei 13:319-53, 1979. NCI, NIH, Btxhesda, M[). Seif 1, Khour5 G & Dhm R. BKV \plice sequence~ based on analYSI$of preferred donor and acceptor wIes. ,Nuc/. Actd. Re.Y, 6:3387-98, 1979. NCI, NIH, Bethesda, MD. 80-0815. Wahl G M, Stern M & Stink G R. Efficienr tran$fer of large DNA Iragmen[s trom agarose gels to dm?oben.zyloxyethy l-paper and rapid hybridi~atton by using dextran wlfate. Proc. ,Na(. Acud. Scv. US 76:3683-7, 1979. S[anford LJm$., %h. Med., Stanford, CA. of 0 47 47 I48 5 45 5(3 35 I 16 245 52 117 5 Ill ~~ Wang J H, A H J, ouigley van der Wrel G J, Kolpak G & Rich A. F J, Crawford Molecular J L, van Bnom structure of a left-handed double helical DNA fragmen[ at a~omic resolution. ,Narure 282:680-6, Dept. BIoI., Cambridge, MA; Univ. 1979. Mass, lnst. Technol., l.e!den, Gorlaeus Labs., the Netherlands. 80-0265; 81-0287. 576 Molecular Genetics—General Gene Expression, Regulation 79&8Q Total 79 80 3 42 45 70 Aahburner 21 81 I 02 60 Crkck F. Split genes and RNA splicing. Science 204:264-71, Salk Inst. Biol. Studies, La Jolla, CA. 8CL1266. 6 73 79 67 Davidson Citations 81 M & Borowr J J. The induction of gene activity in Drosophila by heat shock. Cc// 17:241-54, 1979. Univ. Calif., Dept. Biochem. Biophys., San Francisco, CA. 800282:81-0294. E H & Britten R J. Regulation 38 47 36 Gilboa E, Goff S, Shields A, possible 1979, Calif. Inst. of gene expression: role of repetitive sequences, Science 204:1052-9, Technol., Div. BIoI., Pasadena, CA, 9 1979. Yosbimum F, Milra S & Baltimore D. vitro synthesis of a 9 Kbp terminally redundant DNA carrying the infectivity of Moloney murine leukemia virus. Cc// 16:863-74, 1979. Mass. Inst. Technol,, Dept. Biol. & Cfr, Cancer Res., Cambridge, MA. 8C-05rl); 81-0190. 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Distinct a-noradrenergic receptors differentiated by binding and physiological relationships, L~e Sci. 24:79-88, 1979. Johns Hopkins Univ., Sch. Med., Baltimore, MD, 802760; 81-tK)67. Pickel V Virology 13 37 50 21 10 42 52 30 7 51 S8 39 4 41 45 41 11 61 72 43 P, Goldfarb M P & Weinberg R A, A defined subgenomic fragmeni of in \itro synthesized Moloney sarcoma virus DNA can induce cell transformation upon transection. Cell 16;63-75, 1979, Mass. Inst. Technol., Ctr. Cancer Res. & Dept, Biol., Cambridge, MA. 8(M3019; 81-0223. Hayman M J, Royer-Poknra B & Graf T. Defectiveness of avian erythroblastosis virus: synthesis of a 75K gag-related pro[ein. Virology 92:31-45, 1979, Imperial Cancer Res. Fund, Dept, Tumour Biol., London, UK; Max Plarrck lns[. Virus Res., Depf. Biol. Med., Tiibingen, FRG. 800614; 81-0318. Lane D P & Crawford L V. T antigen is bound 10 a hosi protein in SV @transformed cells. Nature 278:261-3, 1979. Imperial CoIl., Dept. ZooI.; Imperial Cancer Res. Fund, Dept, MoI. 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Mina\ Gcrai\, Belo Hor!zonte, f3razll 80-0229: 81 .02S2, J A, Brown C, BurrreN 580 L, Rutledge A, Pnkempner M & (A+rcia 79&80 Total 79s0 15 31 Chationa 81 46 24 Jick H, Watkins R N, Hunter J R, Ohm B J, Madsen S, Rolhman estrogens and endometrlal cancer. N. ErrK/. J. Med. 3tX1218-22, 1979. Boston Univ. Med. Ctr. & Harvard Univ. Sch. Pub, Hlth., Boston, MA; Grp. Hlth. Cooperative Puger Sound, Seaule, WA, 80-022% 81-0252. McGregor A M, ScanIon M F, Hafl K, Cook D B & Hall R. Reduction in size of a pituitary tumor by bromocriptine therapy. N. Eng/. J. Med. 3@3:291-3. 1979, Royal Victoria In firm., Dept. Med.: Newcasfle Gen. Hosp., Dept. Neuroradiol., Newcasle upon Tyne, UK. 80-2436; 81-1896, Stern R S. Thibodeau L A, Kleinerman R A, Parrish J A & fWzpa(rick T B. Risk of cutaneous carcinoma in pa!ients treated w]th oral methoxsalen phot ochemotherapy for psoriasis. N’. Eng/, J, ,Med. 303:809-13, 1979. Harvard Uni\. Sch. Med. & Sch. Pub. Hllh,; Beth Israel Hosp., Dep[s. Dermatol. and Comp. Med.; Mass. Gen. Hosp., Boston, MA. 80-2447; 81-2681. K J & Walker Replacement A M. 12 34 46 28 12 39 51 77 7 55 62 47 6 39 45 38 B N. Identifying environmental chemicals causing mu[a(ions and cancer. SCierrce 204:587-93, 1979. Uni\. Cal If,, Dept. Btochem,, Berkeley, CA. Hubernsan E & Callaham M F. [nduc[ion of terminal differemiat]on in human promyelocytic leukemia cells by [umor-promoting agen!s, Proc. Mm. A cad. Sci. US 76:1293-7, 1979. Oak Ridge Nat. Lab., Di>. Biol., Oak Ridge, TN, 80-0485; 8[-0750, 91 94 Murphy Cancer Research-Basic Iw Ames R C, Hammaratr6m s)ow-reacring ,4cad. Sri. Stockholm, Cell 9 41 50 72 subsiance 118 126 170 0 55 55 49 5 74 79 123 18 52 70 44 6 39 45 30 murine Biology, B. Leukolriene mastocyloma 76:427S-9, 1979. Karolinska Sweden. 80-WM3; 81-0371. US C: a cells. Proc. ,Na(. lns~., Dcpt. Chem., Biochemistry Arachidonic acid metabolism in poly leukocy~es: effects of ionophore A23 187. Proc. ,Nw. Ins[,, Dept. Chem., A cad. Sci. US 76:2148-52, 1979. Karohnska Stockholm, Sweden. 8M1343; 81-0371, Goldstein J L, Anderson R G W & Brown M S. Coa[ed pits, coated vesicles, and receptor-mediated endocytosis. .Naure 279:679-85, 1979. Uni*. Texas, Hl[h, Sci. Ctr,, Daflas, TX. Hammarslrom S. Murphy R C, %muelaaon B, Clark D A, Mioskowski C & Corey E J. Structure of leuko{riene-C: identification of the amino acid part. Biochem. Biophys. Res. Commun. 91:1266-72, Inst., DepI. Chem., Stockholm, Sweden; Harvard 1979. Karolinska Univ., Dept. Chem., Cambridge, MA, 80-0043; 81-0371. Krebs E G & Beavo J A. Phosphorylation-dephosphorylation of enzymes. Annu. Rev. Bioc/rem. 48:923-59, 1979. Howard Hughes }Ied. Inst., Lab. Mol. Pharmacol.; Univ. Washington, Dept. Pharmacol., Seattle, WA. Maccecchini M L, Rudin Y, Blohel G & Schalz G. Import of proteins into mi[ochondria: precursor forms of the extramitochondrially made F1-ATPase subuniis in yeast, Proc. Nur, Acad. SC). US 76:343-7, 1979. Unit, Basel, Depr. Biochem,, Basel, Switzerland; Rockefeller Uni\., New York, NY. 801034; 81-0257, of fibronectin Perkhrs M E, Ji T H & Hynes R O. Cross-linking to sulfated proteoglycans at the cell surface, C’e// 16:941-S2. 1979. Mass. Inst. Technol., Dept. Biol. & C’[r. Cancer Res., Cambridge, MA; Univ. Wyoming, Dept. Biochem., Laramie, WY. 800107; 81-0125. Borgeat P & Samuelsaon B. morphonuclear 8 S & Samuelsson from 581 79 80 II 41 79&&3 Total Citations 52 81 64 Ryan D K, Thomas P E, Korzeniowski D & Levin W. Separa[lon and characterization of highly purified forms of I]\er microsomal CYIochrome P-450 from rat $ t realed wnh polychl or mat ecf blphenyl$, phenobarbital, and 3-me[hylcholantbrene. J. B~o/. Chem. 254:1365-74, 1979. Hoffmann-La Rochc, Dept. Biochern Drug Vfetab., Nulley, NJ. 802657: 8I-O81O. Immunogenetics 13 46 59 35 N & Hood L. hea}y chain gene orgamzation in mice: analyws of a myeloma genomic clone comaimng variable and e com[anr reg]ons. Proc. Nor. Acad. SCI. L’S 76:857-6{, 1979. Cal!t. ln~[. Technol., DI\. BIoI., Pasadena, CA. 80-0594; 81-0339. Kfein J. The major hi!tocompatibihly complex of (he mouje. Scvence 203:516-21, 1979 Ma< Planck Inst. Biol., Tubingen, FRG. Max E E, Seidman J G & Leder P. Sequences of fi~e potenr]al recombination sites encoded close to an immunoglobulm K con~tanl region gene. Proc, Nat. Acad. Sci. L’S 76:345 @4, 1979. NICHHD, NIH, Bethesda, MD. 80-0594; 81 -MJ39. Early P W, Dmis M M, Kaback D B, Dmidson lmmunoglobulin 20 44 64 65 5 73 78 77 3 87 90 94 34 62 96 48 3 50 53 38 16 52 68 60 H, Hiippi K, Heinrich G & Ton%awa S. Sequences at the somatic recombination sites of immunoglobulin light-chain gene~. Nature 280:288-94, 1979. Ba}el Inst. Immurrol., Basel, Switzerland. 800594; 81-0039. %kano H, Rogers J H, Hiippi K, Brack [, Tr’aunecker A, Maki R, Wall R & Tonegawa S. Doma]ns and [he hinge region of an lmmunoglobul]n bea}y chain are encoded )n separate DNA segments Na/ure 277:627-33, 1979. Bawl In\L. Immunol., Basel, Switzerland; Uni\ Cal, f. Sch. Med., Los Angeles, CA. 80-0594; 81-0039. Seidman J G, Max E E & Leder P. A ~-immunoglobulin gene is formed by site $pecific recombination w!thout further soma[!c mulat]on. Nature 280:370-5, 1979. NICHHD, NIH, Bethesda, ,MD. 80-0594; 81-0039, %rkmro Pharmacology Brunner H R, Gavras H, Waeber B, Kershaw G R, Turini 2 48 50 51 7 55 62 36 8 51 59 36 8 38 46 (43 G A, Oral angioten$inconverting enzyme inhibitor in long-term treatment of hypertens!}e patients. Ann. Inrern. Med. W 19-23, 1979. Gni\. [Lausanne, Or. Hemp., Lausanne, Switzerland; Bos(on Cit) Hosp., Thorndike Mere. Labs., Bo;ton, MA. 800304; 81-0249. Costs E & Guidotti A. Molecular mechan!sm$ ]n (he receptor ac[mn of benzodiazeplnes. Annu. Re~. P/IcrrmaccJ/. To.rrco/ 19:531-45, 1979. N[MH, NIH, Washington, DC. Hager W D, Femler P, Mayersobn M, Perrier t), Graves P, Marcus F I & Goldman S. Digoxin-quinidine interaction. N, Eng/. J. Med. 302:1238-41, 1979. Vet. Admin. Med. Crr,; Univ Arizona, Hlrb. SCI. Ctr. & Dept. Pharm. %i., Tucson, AZ. 8CL0629; 81-1544. Neu H C, Aswapokee N, Aswapokee P & k’u K P. HR 756, a new cephalosporin acl]ve against gram-positi~e and gram-negati~e aerob]c and anaerobic bacteria. Anfim{crofr. Agenfs Cfwrrcxher. 15:273-81, Unl\’., Co]]. Phys. Sur8., New York, NY 8CL1056; 1979, Columbia Vukovich R A, McKinstry D N & Gavras 1. 81-2077. Schentag Bernhard J J, Calleri H. cimefidine-associated Schs. Pbarm., G, Rose J Q, Cerra Pharmacokinetic mental Med. & Surg,; F B, DcGlopper and chn]cal confusion. Millard E & studies in patients Lancer f+llmore Hosp., with 1979. SUNY, Buffalo, NY. I: 177-81, 79&ao Total 7980 Citations 81 12 34 46 36 Bergeron J J M, Sikstrom R, Hand A R & Posner B i. Binding and uptake of 12SI-insulin into ra[ Iivcr hepatocytes and endothelium. J. 1979. McGill Univ., DepIs. Anat. & Med., MonCc// Bio/. 80427-43, treal, Quebec, Canada; NIDR, NIH, Bethesda, MD. 8fk0576; 81-0621. 3 54 57 68 Catt K J, Harwood regulation 41 46 26 16 30 46 39 Aguilera receptors G & Dufau and target M L. Hormonal cell responses. Narure NIH, Bethesda, MD. Creutzfs4dt W’. The incretin concept today. Diabetolo~m 16:75-85, FRG. 80-0180; 1979, Univ. Gi5ttingen, Dept. Med., G6[tingen, 81-0942. Tamborbme W’ V, Sherwin R S, Genel M & Felig P. Reduction to normal of plasma glucose in JUWnile d]abetes by subcutaneous adminis[ra[lon of insulin with a porrable infusion pump. IV. L-r?g/. J. Med. 300:573-8, 1979. Yale Univ., Sch. Med., New Haven, CT. 8cMW94; 81-1131. 28O:1O!-I5, 4 J D, of peptide 1979, N[CHHD, Bacteriology 17 41 58 36 16 31 47 29 10 48 58 69 Brenner D J, Steigerwalt A G & McDade J E. Classlficat ion of Ihe Legionnaires’ disease bacterium: Legicme//a pneumophi/a, genusnovum, species-nova, of the family Legionellaceae, familia no}a. Ann, Intern. Med. W656-8, 1979. US Pub. Hlth, Serv., Ctrs. Disease Control, Atlanta, GA. 80-0433; 8 I-0522. McKinney R M, Thacker L, Harris P P, Lewallen K R, Heberl G A, Edelstein P H & Thomason B M. Four serogroups of Legionnaires’ disease bacteria defined by direct immunofluorescence. A nn. In/em, Med. 90:621-4, 1979. US Pub. Hlth. Ser\., C(rs. Disease Control, Atlanta, GA; Vet. Admin., Wadsworth Med. Ctr.; Univ. Calif., Sch. Med., Los Angeles, CA. 80-0433:81-0522. Stoeckenius W’, Lozier R H & Bogomolni R A. Bacteriorhodopsin and the purple membrane of halobacteria, Bmchim. Biophys. Acfa 505:215-78, 1979, Univ. Calif,, Cardiovascular Res. Ins[., San Francisco, CA. 802544; 81-2776. Pathology II 42 53 62 5 65 70 95 1 48 49 78 T. Cholesterol in the prediction of atherosclerotic disease. Ann. ln(ern. Med. 9Lk85-91, 1979. NHLBI, NIH, Be{hesda, MD; FrantinghamHeart DiseaseEpidemiol.Study, Framingham,MA; Boston Univ., Med. Ctr., Boston, MA. Moncada S & Vane J R. Arachidonic acid metabolizes and tbe interactions between platelets and blood-vessel walls, N. Eng/, J. Med. Res., 3013:1142-7, 1979. Wellcome Res. Labs., Dept. Prostaglandin Kent, UK. Prockop D J, Kidrikko K [, Tuderman L & Guzman N A. The biosynthesis of collagen and i[s disorders. N. Er@. J. Med. 301:13-23, 1979. Rutgers Univ., Coil. Med. & Dent. New Jersey, , Piacataway. NJ. 80-2608:81-2868. Kannel W B, Castelli W P & Gordon 583 79&81J Total 79 80 4 42 Citations 81 Myophysiology 46 49 ~.mbr{)ugh I) M. {’omrol of acerylcholine receptOr$ muwle. Ph.wt(>l, Rev, 59: )65-2 17, 1979. Carneg]e Dep[. Embryo L, Baltimore, MD, 81.1512. 38 R 46 21 Nairn A C & Perrj 01 rabbit mlngham, Figure 2: aPPQr S V. Calmodulin ta~l \keletal muw’le. Dept. thochem., —_ and myoi!n Llm<hem. B]rmlngham, The 1979 lIt’e wmce~ artwle~ wh)ch are among the I(KJ mm-cited date,. in tigUre I mainl) becauw 01 late publwatio” In $kele~al Inst. Wa\htngton, Ilgh(-chain klnaw 1979. Unlv LIK. 8(MK!45; 81-WM& J, 179:89-97, ]n 1979- 19ffl, and which Blr- do not Total Cilalions 79 80 81 2 42 56 I(K3 10 32 ~~ 97 6 36 46 88 3 39 48 X3 2 37 75 114 0 4! 54 95 u 32 48 88 1979-81 J. RNA proces~lng and Ihc lmer~ening sequence problem. .lnnu. Rev. flochem -IX: 1035-69, 1979 L’n!t Cal] f’, t3epI Chem., la Jolla, CA. 81-(X02. Borgeal P & %muelsson B, Transformation 01 arachldonic acid by rabbl[ polymorphonuclear leukocyte?. J. B]ol. C’hem, 254:2643-6, 1979, Karolm$ka In\[., Dept. Chem., Stockholm, Sweden. 80-0343: 8!-0371, Bra\o E 1, & Tarwi R C, Conkert)ng enz]me Inhibition with an orall> actlte compound !n bypcrtcnslbe man. H,vper[emwn 1;39-46, Clln!c I-dn., Re\. Di\ , Cle\eland, C)H, 80.0304; 1979. Clmeland f31-0249. Cantor H & Gemhon R K. Immunological cirums: cellular compo\ilion. Fed, Proc. 38:2058-M, 1979. Har\ard Unl\,, Sch. Med.; S]dne! Farber Cancer In$t., Bo\ton, hl,A; Yale Uni\., Sch. ilcd., New Ha\en, CT, Carpenter G & Cohen S. Epldermal growth factor. Anr7u. Rev Sch. Med., Bmc?rem. 48:193-216, 1979. Vanderbilt lJm\ Nash\ ]lle, TN. Chow L T, Broker T 1? & Lewis J B. Complex splw]ng pattern, of RNAs from the early reglon~ of adenot ]ru$.2. J. ,Mo/, B/o/. 134:265-303, 1979, Cold Spring Harbor Lab , Cold Spring Harbor, NY. 8M086; 81-CHJ81. Abehun Frank M M. Hamburger M 1, Lawle! T J, Kimberly R P & Plotz Defccti\e reticuloendothelial sy$[em Fc-recep[or function in ~y~!em]c lupus erythemato$u; . .V. .EnE/. J, .&led. 3(X):5 18-23, 1979, NIH; NCI, NIH; NI,AMDD, NIH, EJethe$da, hlD. NIAID, 81-1812, Friz.mll R A. Field M & Schuliz S G. Sodium-coupled chlorlde [ran\ port b> epltbel]al [l~sue;. Amer. J. Phy\io/, 236: [- 1-8, 1979. Univ. Pittsburgh, %-h. Med., P1tt\hurgh, PA; [Jnl!, Chicago, DepI. Med., Chicago, 11.: Mount De$erl Idand lhol. Lab., Sal$bury Cove, ME. P H. 10 33 5(J 93 3 40 42 85 5 39 51 95 Xrikorian J G, Burke J S, Rosenberg S A & Xaplan H S. Occurrence of non-Hodgkin’\ Iymphoma atter therapy for Hodgk! n’\ dl$ease. N. Eng/. J. Med. 3W:452-8, 1979. Stanford Unl\., Sch Med., S[anford, CA. 8(M%O; 81-0292, Parodi A J & Leloir L k’. The role of IIpid mtermedlatef in [he glyco$ylation of proteini m the eucaryotlc cell. B/och/m. Bioph,w Acla Research s59: ].37, ]979. Wellcome Res. Labs,, Dept, hltcrobiol., Triangle Park, NC; lnst. In$es[, Bioqufm. Fund, Campomar, Bueno\ A}rm, Argent!na, 80.2009, ~ 37 50 89 ProekoB D J. Khirikko K 1. Tuderman L & Guzman N A. Tbe bio~yntbmis of collagen and IIS dl$orders. .V, .Eng/. J. Med. 301:77-85, 1979. Rutger$ L;nl$., C-oIl. Med. & Denl. New Jerse\, Pl$ca[away, NJ, 80-2608; 81-2868, 584 ToIal Vllaliorls ‘)79.8 I 79 80 3 35 62 100 8 34 48 ‘w 5 39 43 87 1 40 63 104 S. Production of diglyceride from phospba[idylinositol in activa[ed human platelets. J. C/in, /rrws/. 63:580.7, 1979, Boston Vet. Admln, Med. Ctr,; Boston Univ., Sch. Med., Boslon, MA. 80-0520; 81-0558, Shibala T, DasGrpta C, Cunningham R P & Radding c M. Purified Escherichia coli recA protein catalyze$ homologou~ pa]ring of superhel ical DNA and \lngle-st randed fragments, Proc. ,var, Ac’arJ, .SCI. US 76:1638-42, 1979, Yale Univ., Sch. Med., New Haven, CT. 80 1036; 81-0108. Shoyab M. De Larco J E & Todaro G J. Molog]cally ac[tie phorbol esters specifically allcr at fin]ty of epidermal grow[h Iac[or membrane receptori. ,N’a(ure 279:387-91, 1979. NC1, N[H, Be[he\da, hltJ. 80-0485; 8 I-0945. Ritlenhouse-Simmons Thomas E f), Buckner C 1), Clift R A, Fefer A, Johnson F L, H, Slorb R Neiman P E, Sale G K, %rnders J E, Singer J W, Shulman [ran> plantation for acute nonlymphobla$tic P L. ilarrow Ieukemla ]n fir$f remijsion. A’. EtIg/. J. Med. 301.597-9, 1979. Fred Hu[ch]nson Cancer Re\. C[r.; Unit Washington, Sch. Med.; Children’$ orthoped. Hosp., Seatlle, WA. 80-2605; 81-0332. \olgelstein B & Gillespie D. Preparatl\e and analytical purification of DNA from agarow Proc. ,Aat. A cad. SCJ, US 76:615-9, 1979. NCI, NIH, Lkhesda, \lD. Wang J K, Nauss L A & Thomns J E. Pmn relief by intrathecall> & Weiden II 7 28 54 93 33 45 85 applied mOrphine in man. A/WSIhC$IO/OK.P 50:149-51, 1979. MasO Clinic, Depts. Ane\lhe$. & Neurol.; klayo Sch. Med., Rocbewer. 1 42 76 119 1 37 72 I 10 2 41 39 82 1 41 56 98 MN. 80-05 I I ; 81-0547. Wutson J, Gillis S, Mwbrook J, ?tlochizuki D & Smith K A. LtIochemlcal and biological characterization of Iympbocyle regulatory molecules. J. E.rp. Med. 150:849-61, 1979. Uni\. Cab!’. Sch. Med.. Ir\ine, CA; Uni\. Auckland, Dept. Cell f3iol., Auckland, hew Zealand; Dartmouth Hitchcock Nled. Ctr. & Norris C-ot(on Cancer C[r., Hano\er, NH. 80-0(X31. Reil P A, Luse fJ S. %@ J & Roeder R G. Selective and accurale initiation 01 tranwripl ion at tbe Acf2 major laIe promo[or in a soluble ~ys(em dependent on purified RNA polymerase [1 and DNA. cc// 18:469-84, 1979, Washington Uni\., Sch. Med., St. Loui\, MO, 81-26(XJ. W’ickner W. The assembly of protein~ into biological membranc~: the membrane trigger hypo[besis. Antru. Rev. B~ochem. 48:23-45, 1979. Biol, Inst. & OepI, BIoI. Chem,, Lo\ Angeles, CA. L!nlv. Calit’., MO1. Wolff fJ J & Brostrom dependent 6 33 51 90 regulator C 0. pro[mn. Properties Adv. and functions Cyc/ic ,Nuc. Res. of [he calciumI I :27-88, 1979. Ru[gers Uni$., CoIl. Med. & Dem. New Jersey, Dep(. Pharmacol., Piwataway, NJ. k amada K M & Kennedy D W. Fibroblast cellular and plasma fibronec[]ns are $imilar but nol identical. J. C’e// Bfo/. 80:492-8, 1979. NC1, NIH, Bethesda, MD. 80-0107; 81-012S. ISI/BIOMED cluster. Of the 17 papers that did not make a cluster, some may represent concepts that are too new to have been co-cited often with other in a papers. But some are not included cluster simply because they were cited too frequently to meet the requirements of co-citation strength. Only seven of the papers in Figure 1 are single-author works. Twenty-two 585 papers have two authors, 22 have three, and 19 have four. Ten papers have five authors, seven have six, seven have seven, three have eight, one has nine, three have ten, and one has 11 authors. Twenty authors have more than one paper on the list. One, P. Leder, has four papers. Four authors—R. B. Herberman, E. L. Reinherz, B. Samuelsson, and S. F. Schlossman—each have three Table 1: 1980-1981 research fronts which II .0252 contain most-cl[ed life sciences papers as core documents. A = research front number. B = research front name. C = number of 1979 most-cited life sc]ences papers Included In [he core of each research front. Es[rogens and endometrial cancer and breast cancer Leuko[rienes and lipoxygenasepafbways Oefects in the beta-globln gene In beta-tbalas$emia Pathology of Legionella pneumonia SV-40 and polyoma-virus T-antigens Nucleotide sequences of globm.gene and other genes T-cell imbalance in d)sease 1979 11-0371 11.0428 11-0522 11-0817 11-2464 A 80-0@31 Helper and suppressor T-cell factors in immune respon$e regulation by and transcrlp[ion 8tLt1319 Transformation of carcinogenic ~iruses rranscrlptlon, and 80-CN327 Transformation, DNA lumor-vmus antigens 8WW43 Leukotnenef and slow reactlrrg wbstances of anaphylaxi$ 80-CQ45 Calmodulin and protein pho\phory - 80-0107 80-0173 80-0229 Assembly of ml[ochondrial membrane-sys[ems Structure and blolog]cal ac[lii[y of fibronectln Transpomns and moblledispersed-genefic elemen[~ Clin]cal aspects of e~[rogens in endome[rial 80-0304 of capfopr]l Expres~ion, regulation, mo!emen[, and recombination of tran~ formed cell.llnes Gene-related Hb di$ea.sej and 80-0359 (halassemla Geographical analys]s ot 80-0433 Legionnaires-disease Tumor-promo[or-lnhibitmn of EGF in 80-0485 myeloid leukemia 80-056JJ Molecular genetics of DNA viruws Molecular genetics of Ig complexes 80-0594 Initiation of genetic reccrmbinatlon 80-1036 promored by recA prore)n of E. co]! Interferon-mediated con[rol of natural 80-1428 killer-cell activit) in Lumor cell~ Monoclinal antibodies react]~e 80-1573 with human cytotoxic T-cell\ in Iymphocylic malignanc]ej Analysis of natulal killer-cell actl~it} 802023 ]n immunodeficlency SIruclure of procollagen and collagen 80-2608 types in related diseases Sarcoma-virus transforming-protei rr~ 81-0318 Organ] za~]on, rearrangement and Ig 81-0039 gene-ekpresslon Calmodulin interaction with myofin 81-0046 Iighl-chain-kinase E. coli recA protein act!vltie~ 81-0108 81-0125 Slruclure and function of fibroncctin structure and 81-0140 Cytochrome-c-oxidase the mi!ochondrial genome Prm ]ral DNA of ret rot irus, chromo81-0193 some in[egra!ion and RNA \ Iral-transformation 81-0246 Cholecy$lokinin recep[ors in brain 8 I-0249 Stud,es of the angiotensln-converting enzyme-i nhib](or caplopril 2 2 2 2 2: The 27 journals represented on [he Ilst of 102 1979 life \cicnceJ paperj mCIT[ cited (n 1979-1980, The “umber) in parentheses are !he im- 4 pact factorj for I he Journal\. ( Impact equals number ot ciratmn$ rt!ct’wed by articles publisbed ]n that Journal. ) Data were taken from the 1979 Journul <’[(a[ (or! .Repnrw The figures at the right indlca[e [be number of papers from each Journal whlcb appears on the I(st. average 2 2 Proc. NicI. Acad. SC,. tJS(8.9) Na[urc (5.9) Cell (13.6) N, Engl LJ. \led. (13.6) Ann. Intern. Med. (5.6) Science (5.7) J. lmmunol. (5 8) Annu. Rev. f3iochem. (27.7) iJrain Rc\. (3. f3} [mmunol. Rev. (Il.?) J. L3iol. Chem. (6.1) J. Cell Biol. (8.4) 1. Exp. \led. (9,7) I ]le Sci. (3.1) Nucl. Acid. Re~. (4.4) ,Annu Re\. Gene[. (7.6) Annu. Rev. Pharmacol. TOXICOI,(6.1) Antimicrob. Agent, (’h.emo[her. (3. 1) Bmchem Biophy\. Re\. Commun. (3.3) Biocbem, J (2.9) Biocbml. EJloph)\. Ac[a (2.9) Oiabe[ologla (4 6) Eur. J. Immunol. (4.9) .1. Virol. (4.5) I.ancet (8.5) Ph>siol Rm. (19.9) %’irolog~ (3.8) 2 in renal hyper(en~!on ~ Table 3 2 cancer Pharmacok.ine(ics 4 4 ~ Iation regula[lon 80-0105 11-2489 2 2 2 80-0341 2 6 2 2 2 5 2 ~ 3 3 2 4 5 24 16 14 9 4 4 3 2 ~ ~ 2 ~ ~ 2 2 I I I I 1 1 1 I I 1 1 I Fifteen authors have two papers. papers—G, D. Bonnard, J. Y. Djeu, S. Hammarstr6m, H. T. Holden, K. Huppi, T. Mania(is, E. E. Max, R. J. Miller, R. C. Murphy, J. R. Ortaldo, H. Sakano, J. G. Seidman, S. H. Snyder, S. Tonegawa, and D. J. Weatherall. The papers in this study were published in the 27 journals listed in Table 2. 2 2 2 ~ 4 2 ~ 586 The institutional affiliations of the authors on the list, and [he number of papers produced by each institution, Table 3: Basel Inst. Immunol. Base], Switzerland Beth Israel Hospital Boston, MA Boston Ci[y Hospital, MA Boslon Univ., MA California Inst, Technology Pasadena, CA Carnegie lnst. Washington Baltimore, MD Children’s Hosp. Med. Ctr., Boston, MA City of Hope Nat, Med. Ctr. Duarte, CA CNRS, France Inst. Chim. Biol,, Strasbourg Inst. PasIeur, Paris Cold Spring Harbor Lab., NY Columbia Univ. CoIl. Physicians & Surgeons, NY Cornell Univ. Med. CoIl., NY Fed. Univ. Minas Gerais Belo Horizon[e, Brazil Framingham Heart Disease Epidemiol. Study, MA Fox Chase Cancer Ctr., Phila., PA Genentech, Inc., San Francisco, CA Group Health Cooperative of Puget Sound Seattle, W’A Hacettepe Umv., Ankara, Turkey Harvard Univ. and Sch. Med. Cambridge, MA Hoffmann-La Roche, Nutley, NJ Howard Hughes Med. Inst., Seattle, WA Imperial Cancer Research Fund London, UK Imperial CoIl., London, UK Jichi Med. %h., Tochigi-ken, Japan Johns Hopkins Un!v., Baltimore, MD Justus L]eblg Univ., Giessen, FRG Karolinska Inst., Stockholm, Sweden Kyoto Uni\’., Japan Lit[on Llionetics, Inc. Kensington, MD .Massachussetts General Hospital Boston, MA Massachusetts Inst. Technology Cambridge, MA Max Planck Inst., Ttibingen, FRG McGill Uni\., Montreal, Canada Michigan State Univ., East Lansing, MI Millard Fillmore Hosp., Buffalo, NY MRC Lab. Mol. Biol,, Cambridge, UK National Irrstifutes of Health NCI NHLB[ NICHHD N[DR NIMH N[NCDS 2 1 1 2 3 1 1 1 2 1 1 I 2 I I 1 1 1 I 1 13 1 I 3 1 1 3 1 4 1 2 I 4 3 1 1 I 2 16 5 1 5 I 2 2 Newcastle Gen. Hosp., Newcastle upon Tyne, UK Oak Ridge Nat. Lab., Oak Ridge, TN Ortho Pharmaceutical Corp. Raritan, NJ Peter Bent Brigham Hospital Boston, MA PrinceIon Univ., NJ Radcliffe [nfirmary Oxford, UK Roche Inst. Mol. Biol., Nutley. NJ Rockefeller Univ., New York, NY Royal Victoria Infirmary, Newcastle upon Tyne, UK Rutgers Univ., Pi.scataway, NJ Salk Inst. Biol. Studies, La Jolla, CA Sidney Farber Cancer InsI., Boston, MA SUNY, Buffalo, NY S!anford Univ., CA Tokyo Metropolitan Inst. Med. Science, Japan Univ. Aarhus, Denmark Univ. Amsterdam, the Netherlands Univ. Arizona, Tucson, AZ Univ. Basel, Switzerland Univ. Birmingham, UK Univ. British Columbia Vancouver, Canada Univ. CahfOrnia Berkeley Los Angeles San Francisco Univ. Chicago, IL Uni\. G8ttingen, FRG Univ. Lausanne, Switzerland Univ. Le)den, the Netherlands Univ. London, UK Univ. Oxford, UK Univ. Pennsylvania, Phila., PA Univ. Perugia, Italy Univ. Texas Health Sciences Ctr. Dallas, TX Uni\’. Tokyo, Japan Univ. Uppsala, Sweden Univ. Washington, Seattle, WA Univ. Wisconsin, Madison, WI Univ. Wyoming, Laramie, WY US Public Health Service CIrs. Disease Control, Atlanta, GA Vet. Admin. Med. Ctr., Tucson, AZ Vet, Admin., Wadsworth Med. Ctr., Los Angeles, CA Wellcome Res. Labs., Kent, UK Wellcome Res. Labs., Research Triangle Park, NC Yale Univ. and Sch. Med., New Haven, CT 1 I I I 2 1 1 3 1 I 2 6 1 7 I 1 2 1 I I I 7 I 2 4 2 1 1 1 1 3 2 1 1 1 I I I I 2 1 1 I 1 2 The top three journals accounted for more than half of the papers. As in past studies, these journals are Proceedings of the National Academy of Sciences of 587 (he USA (24 papers), Nature (16), and Cell (14). This also illustrates a bias in the study. As in other studies of high impact papers, those in fields like molecular biology will dominate, not only because there are so many of them, but because they contain on the average close to 30 references per paper. The authors in this study came from 79 institutions in 13 countries. These are listed in Table 3. As in past studies, a majority of the institutions, 48, are in the US. Ten institutions are in the UK, four are in Japan, and three each are in the Federal Republic of Germany and Switzerland. Canada, the Netherlands, and Sweden each have two of the institutions, while Brazil, Denmark, France, Italy, and Turkey each have one. The National Institutes of Health again account for more papers, 16, than any other institution. Harvard University is second, with 13 papers, Without exception, all of the papers in this study were published in English. The papers in Figure I fall into 12 broad subject categories: molecular genetics, neuroendocrino logy/ neurophysiology, virology, immunology, cancer research, cell biology/biochemistry, immunogenetics, pharmacology, endocrinology, bacteriology, pathology, and myophysiology. The molecular genetics papers are subdivided into nucleic acid structure, general gene expression and regulation, and globin gene expression, The cancer research papers are divided into basic and clinical papers. Fourteen molecular genetics papers deal with nucleic acid structure, including the most-cited paper in this study. That paper, by S. Nakanishi and colleagues, Kyoto University, Japan, reports the nucleotide sequence of a segment of precursor DNA of two pituitary hormones. The fourth most-cited paper, by G. M. Wahl and colleagues, also appears in this group. It deals with the analysis and purification of DNA fragments. That paper received 116 citations. Nine molecular genetics papers are concerned with general gene expression. These papers deal largely with the process of transforming cells by the addition of other genes, and the process of DNA repair. Eight additional papers reported on the structure and characteristics of genes for hemoglobin, the oxygen-carrying component of blood. The 13 neuroendocrinology lneurophysiology papers include the second most-cited paper in this study. That paper, by J. W. Kebabian and D. B. Caine, discusses receptors for dopamine, an important neurotransmitter, Four papers extend the knowledge of endogenous opiates, such as enkephalin, and their receptors. Other papers deal with the transmission of messages through the ner~fous system, and the identification of certain hormones which affect the nervous system. Nearly all of the 11 virology papers are concerned with viruses which produce tumors in animals. These include the polyoma virus and simian virus 40 (SV 40). Three papers in this group deal with the latter. Papers on SV 40 were also well represented in our study of the highly cited papers of 1978.2 There are ten immunology papers in this study. As in previous years, considerable interest is focused on T cells. Four papers in this group deal with T cells, which can recognize harmful antigens and regulate the production of appropriate antibodies. Two papers in this group deal with interferon. Two of the four clinical cancer research papers are concerned with estrogen-induced cancer of the endometrium, or uterine lining. The others discuss the use of the drug bromocriptine to reduce pituitary tumors, and the risk of skin cancer as a side effect of a treatment for 588 psoriasis. The three basic cancer research papers examine the process by which agents promote or induce tumors. There are seven cell biology/biochemistry papers in this study. The one by J. L. Goldstein and colleagues is the third most-cited paper on the list, with 126 citations. This review article discusses receptor-mediated endocytosis, the process by which proteins and peptides enter cells. Other papers in this group deal with various aspects of cell chemistry. Immunogenetics accounts for six papers. Five of them deal with the genetic determinants of immunoglobin, a protein with antibody properties. The paper by J. Klein discusses the major histocompatibility complex (MHC), a series of genes that defines each individual’s immune “identity. ” The MHC also defines the compatibility of recipients for organ transplants. The five pharmacology papers each deal with a different specific drug. The paper by J. J. Schentag and colleagues concerns cimetidine, an important new drug for treating peptic ulcers, a topic which 1 have discussed in a previous essay.b The paper discusses “mental confusion” as a possible side effect when the drug is administered to patients with liver or kidney dysfunction. Three of the four papers in the endocrinology group deal with insulin, the hormone that regulates the body’s use of sugars for fuel. The paper by K. J. Catt and colleagues is a review of the hormonal regulation of peptide receptors. Two of the three bacteriology papers discuss the identification and classification of the Legionnaires’ disease bacterium. Papers on Legionnaires’ disease also appeared in past studies in this series. Of the three pathology papers, one is a review of the relationship between serum cholesterol and atherosclerosis: 589 one deals with collagen, the major molecule of connective tissue; and one discusses arachidonic acid metabolizes, substances which contract and dilate blood vessels and muscles. The list is completed by two papers in myophysiology, the study of muscle function. The paper by D. M. Fambrough is a review of receptors for acetylcholine, a neurotransmitter, in skeletal muscle. The paper by A. C. Nairn and S. V. Perry describes the relationship between myosin light-chain kinase and the protein calmodtdin. Myosin light-chain kinase “activates” myosin, the most abundant protein in muscle, which is a component responsible for muscle contraction and relaxation. Most of the papers in Figure 1 will continue to be highly cited in years to While there have been no come. definitive studies, citation frequency $hortly after publication is one of the Dest indicators of future citation frequency. It is important to note that some Iigh impact 1979 papers did not make he list simply because of publication ar.ifacts. Some papers are excluded be:ause they were published late in the {ear, while others bear “false” publication dates.T In Figure 2, we’ve listed the 1979 papers that would have been in:Iuded if we had taken 1981 citations ino account. Some of these, however, nay be examples of “delayed recogniion”s for a variety of reasons. In closing, let me remind you that the Iominance of molecular biology in these ists is in part due to the size of the biochemical literature as well as the high lumber of references per paper. These ists could easily be extended both commehensively and selectively. If any jourIal editor is interested in learning more ~bout the most-cited papers in his or her ournal, please do not hesitate to contact in the S1 Search Service. 9 Furthermore. near future, you will be able to call up lists of core papers in the ISI search system for any of the 3,000 biomedical research fronts we identify .each year. Of course, there are similar core literatures for mathematics, earth sciences, etc. The next essay in this series will examine the 1979 physical sciences papers that were publication. highly cited shortly after ***** M.v thanks [o Susan Fell Evans and Dorothy Silver Jor their help in the preparation of this essay. o~sal1s8 REFERENCES 1. Garfield E. 1978 articles cited in 1978 and 1979. 1. Physical sciences. Philadelphia: 1S1 Press, 1981. Vol. 4.p. 674-85. 2. --------------. The 1978 articles most cited in 1978 and 1979, 2. Life sciences. Essays ofuninforma(ion scier!ri.$r. Philadelphia: 1S1 Press, 1981. VOI.4. p. 686-95, 3. --------------. ABCsof cluster mapping. Parts 1 &2. Most actike fields inthe life and physical sciences in 1978, Essays ofun lnfor?nu[lonscienr~sr. Philadelphia: 1S1 Press, 1981. Vol. 4, p. 634-49, 4. --------------. 1S1’5 on-line system makes searching so easy e~en a scientist can do it: auromatic indexing & ISt/’BIOMED SEARCH. introducing METADE,X mos[ Essa,vs ojaninformlafion Curretr[ Conrenfs 5. institute for Scientific Philadelphia: 1S1, 6, Garfield E. All about scienrisf. (4):5-8, 26 January 1981. information. lndex[o research 1982. 318P. fronts in IS1/BIO,V~ED~~~ and how Iirtle we know, Philadelphia: 1S1 Press, 7, .. . . . . . ..---... Fa)sepub[ication da(es and other rip-offs. Essa.vs ofaninforma/ion scien~is/. Philadelphia: 1S1 Press, 8, --------------. Premature disco\eryordelayed recognition—why? Essa.vs ofan~t~formu[[oti scientist. Philadelphia: lSI Pre$>, 9. --------------. lSI custom search and research ser~ices, small and tional clientete. Currenf Con[enfs (25):5-8, 21 June 1982. 1982, ulcers, antacids, Essa.vs ofaninformafion scien[isr. 590 t981. Vol. 4. P. 666-73. 1980, Vol. 3. p. 488-91, 1981. Vol. 4.p. 488-93, large, ser~ean interna-