Following are closing prices for stocks covered by BioWorldduring the quarter. They include biotech companies andcompanies engaged in biotech-related R&D, commercialization,in-licensing or enabling technologies. Top-tier pharmaceuticalconcerns are not listed.

Company Ticker Mar.31 June 30 %Chg.

Advanced Polymer Sys. APOS 11.75 9.75 -17Advanced Tissue Sci. ATISA 13.00 11.13 -14Affymax AFMXF 25.50 19.75 -23Agouron AGPH 16.25 11.75 -28Alkermes ALKS 16.75 8.75 -48Alliance ALLP 30.00 18.75 -38Alpha 1 Bio ALBM 9.75 9.50 -3Alteon ALTN 23.50 16.50 -30Alza AZA 41.75 45.63 +9Am Biogenetic Sci MABXA 8.13 5.88 -28Amgen AMGN 62.50 60.88 -3Amylin AMLN 13.75 7.25 -47Anergen ANRG 10.00 6.75 -33Aphton APHT 19.25 18.00 -6Applied BioScience APBI 36.75 13.25 -64Applied Biosystems ABIO 14.50 13.00 -10Applied Immune Sci. AISX 23.00 17.25 -25Applied Microbiology AMBI 4.38 4.63 +6Aramed ARAMZ 42.00 42.25 n/cAthena ATHN 10.75 7.50 -30Atrix ATRX 10.75 8.50 -21Belmac BLM 14.13 11.75 -17BioChem Pharma BCHXF 29.50 14.38 -51Biocircuits (1) BIOC 4.75 3.50 -26Biogen BGEN 26.38 25.50 -3Bioject BJCTF 6.25 4.75 -24Biomatrix BIOX 13.00 7.75 -40Biomerica BMRA 2.38 1.75 -26Biomira BIOMF 15.00 10.25 -32Biosys BIOS 10.00 7.25 -27BioTechnica BIOT 3.88 3.00 -23Bio-Technology Gen BTGC 9.00 6.63 -26Biotechnology Dvt. BIOD 4.50 2.63 -42Calgene CGNE 11.63 11.50 -1Cambridge Biotech CBCX 9.50 5.75 -39Cambridge Neuro CNSI 8.00 6.00 -25Carrington Labs CRN 17.00 10.50 -38Celgene CELG 13.75 10.00 -27Cellcor CLTX 10.00 5.00 -50CellPro CPRO 10.75 10.25 -5CelSci CELI 2.63 1.81 -31Celtrix CTRX 8.75 6.00 -31Centocor CNTO 29.13 13.00 -55Cephalon CEPH 13.25 8.25 -38Chemex CHMX 2.56 3.75 +38Chemtrak (1) CMTR 10.75 6.50 -38Chiron CHIR 47.38 54.38 +13Collab. Research CRIC 2.88 1.50 -48Collagen CGEN 22.25 18.50 -17Columbia Labs COB 7.00 4.38 -38Cortex CORX 2.50 1.69 -32Cor Therapeutics CORR 14.25 11.25 -21Corvas CVAS 8.38 6.00 -28Crop Genetics CROP 6.50 5.00 -23Curative Tech CURE 17.00 8.50 -50Cygnus CYGN 23.75 11.00 -54Cytel CYTL 12.00 8.00 -33Cytogen CYTO 17.50 17.38 n/cCytoRad CYTDZ 9.75 9.13 -6CytoTherapeutics CTII 8.00 7.25 -9CytRx CYTR 7.38 5.50 -26DDI Pharm DDIX 2.44 2.50 +3DeKalb Genetics SEEDB 30.50 28.00 -8Deprenyl Animal DAHI 5.75 4.13 -28Deprenyl Research DEPLF 14.00 8.75 -38Deprenyl USA DUSA 28.75 22.50 -22DNA Plant Tech. DNAP 7.00 6.31 -10DNX DNXX 7.75 6.25 -19Dura Pharm. DURA 8.25 6.25 -24Dynagen DYGN 8.06 6.25 -23Ecogen EECN 10.63 8.00 -25EcoScience ECSC 9.00 7.00 -22Elan ELN 46.00 40.38 -12Embrex EMBX 6.88 5.38 -21Emisphere EMIS 21.50 19.00 -12Enzo Biochem ENZ 4.50 3.88 -14Enzon ENZN 11.50 6.88 -40Epitope EPT 18.25 16.75 -8Escagenetics ESN 10.00 7.13 -29Future Medical Prod. FMPI 3.38 2.38 -30Genelabs GNLB 6.88 5.63 -18Genentech GNE 27.38 31.75 +16Genetic Therapy GTII 10.25 7.25 -29Genetics Institute GENIZ 28.75 31.75 +10Gensia GNSA 38.75 36.50 -6Genta GNTA 11.25 9.25 -18Genzyme GENZ 44.00 44.00 n/cGilead GILD 16.50 12.25 -26Glycomed GLYC 15.38 9.50 -38Granada Biosciences GBI 1.50 0.56 -63Greenwich GRPI 15.00 7.75 -48Gynex GYNX 3.25 1.94 -40HemaCare HEMA 10.50 6.25 -40HycorBio HYBD 6.63 6.50 -2Icos ICOS 10.25 7.38 -28Idec IDPH 11.00 6.63 -40Idexx IDXX 20.50 22.25 +9IGLabs IGLI 10.00 10.00 n/cImClone IMCL 15.25 10.25 -33Immucell ICCC 1.19 2.25 +89Immucor BLUD 13.00 9.50 -27ImmuLogic IMUL 14.50 10.00 -31ImmunoGen IMGN 13.00 12.25 -6Immune Response IMNR 25.50 24.75 -3Immunex IMNX 43.75 28.75 -34Immunomedics IMMU 11.50 7.38 -36Imre IMRE 4.00 3.25 -19InnoVet IVET 3.00 3.00 u/cInterferon Sciences IFSC 8.00 5.00 -38Intl Murex MXX 13.88 12.50 -7Interneuron IPIC 8.13 8.50 +5Isis ISIP 11.00 8.25 -25Ivax IVX 33.25 24.88 -25Lidak LDAKA 1.75 1.31 -25Lifecell (1) LIFC 13.50 13.50 n/cLifecore LCBM 15.50 14.00 -10LifeTech LTEK 20.00 19.50 -3LiposomeCo LIPO 12.75 9.75 -24LiposomeTech LTIZ 14.50 10.25 -29Magainin MAGN 8.00 6.00 -25Matrix MATX 10.88 6.00 -45Medarex MEDX 11.25 9.50 -16MedChem MCH 12.50 7.88 -37Medeva MDV 18.25 15.88 -13Medicis MDRXA 2.75 1.94 -30MedImmune MEDI 31.50 19.00 -40MGIPharma MOGN 12.25 7.25 -41Molecular Bio MB 26.50 21.88 -18Mycogen MYCO 15.38 14.50 -6NeoRx NERX 3.88 3.00 -23Neozyme NEOZ 26.50 23.50 -11Neurogen NRGN 13.00 9.00 -31N.Am Vaccine NVX 10.50 9.63 -8Nova NOVX 6.25 3.75 -40Noven NOVN 8.63 9.75 -13OncogeneSci ONCS 6.75 5.00 -26Oncor ONCR 7.75 5.25 -32Organogenesis ORG 12.00 11.00 -8Osteotech OSTE 11.25 8.25 -27PerSeptive (1) PBIO 7.00 7.50 +7Pharmatec PHTC 3.88 2.13 -45ProCyte PRCY 8.50 6.25 -27Protein Design Labs PDLI 10.13 6.88 -32Prot. Polymer PPTI 4.50 2.88 -36QuadraLogic QLTIF 7.13 5.25 -26Quidel QDEL 6.63 4.63 -30Receptech RECP 20.75 21.75 -5Regeneron REGN 15.25 11.25 -26Repligen RGEN 15.75 12.25 -22RibiImmuno RIBI 8.88 7.13 -20Roberts RPCX 28.50 24.38 -15SciClone SCLN 8.50 8.38 -2SciGenics SCGN 18.25 16.00 -12Scios (8) SCIO 14.88 10.38 -30Sepracor SEPR 9.50 8.00 -16Somanetics SMTS 4.13 3.94 -4Somatix SOMA 8.88 8.13 -9Somatogen SMTG 28.50 31.50 +11Sphinx SPHX 10.75 7.75 -28Synbiotics SBIO 5.50 4.38 -20Synergen SYGN 47.50 49.50 +4Syntro SYNT 6.00 3.94 -34SyStemix STMX 34.38 29.25 -15T CellSci TCEL 8.75 6.75 -23Telios TLIO 8.00 7.00 -13Theratech (1) THRT 6.50 5.38 -17Tocor II TOCRZ 26.00 15.50 -40TSICorp TSIN 9.00 5.00 -44Unigene Labs UGNE 4.25 3.25 -24Univax UNVX 8.50 6.25 -26U.S. BioScience UBS 14.00 10.38 -26Vertex VRTX 11.75 7.50 -36Vestar VSTR 14.25 11.50 -19VimRx VMRX 2.25 1.56 -31Viratek VIRA 14.75 9.00 -39Xoma XOMA 19.50 13.50 -31Xytronyx XYX 13.38 9.13 -32Zynaxis ZNXS 11.50 5.38 -53

Notes:1. IPO during quarter. March 31 price is the IPO price.

(c) 1997 American Health Consultants. All rights reserved.