[1] UNIV PARIS 06, INST PASTEUR, DEPT MOLEC BIOL, UFR 927, F-75724 PARIS 15, FRANCE
[2] INST MOLEC BIOL & BIOTECHNOL, FDN RES & TECHNOL HELLAS, GR-71110 IRAKLION, GREECE
[3] FREE UNIV BRUSSELS, PHYSIOL CELLULAIRE & GENET LEVURES LAB, B-1050 BRUSSELS, BELGIUM
[4] EUROPEAN MOLEC BIOL LAB, D-69117 HEIDELBERG, GERMANY
[5] UNIV SALAMANCA, DEPT GENET & MICROBIOL, E-37007 SALAMANCA, SPAIN
[6] UNIV AUTONOMA MADRID, E-28049 MADRID, SPAIN
[7] FAC CIENCIAS MADRID, CSIC, CTR MOLEC BIOL, E-28049 MADRID, SPAIN
[8] FAC SCI AGRON ETAT GEMBLOUX, MICROBIOL LAB, B-5030 GEMBLOUX, BELGIUM
[9] UNIV PARIS 11, IGM, GENET MOLEC LAB, CNRS, URA 1354, F-91405 ORSAY, FRANCE
[10] INST GULBENKIAN CIENCIAS, GENET MOLEC LAB, P-2781 OEIRAS, PORTUGAL
[11] CTR UNIV ORSAY, INST CURIE, BIOL SECT, F-91405 ORSAY 15, FRANCE
[12] LAB MOLEK BIOL, D-82152 MARTINSRIED, GERMANY
[13] UNIV GIESSEN, INST MIKROBIOL & MOLEK BIOL, D-35392 GIESSEN, GERMANY
[14] QUIAGEN GMBH, D-40724 HILDEN, GERMANY
[15] UNIV FRANKFURT, INST MIKROBIOL, D-60439 FRANKFURT, GERMANY
[16] UNIV MUNICH, INST PHYSIOL CHEM PHYS BIOCHEM & ZELLBIOL, D-80336 MUNICH, GERMANY
[17] MAX PLANCK INST BIOCHEM, MIPS, D-82152 MARTINSRIED, GERMANY
[18] UNIV DUSSELDORF, INST MIKROBIOL, D-40225 DUSSELDORF, GERMANY
[19] BIOTECHNOL & MOLEK BIOL FORSCH, D-69259 WILHELMSFELD, GERMANY
[20] UNIV MANCHESTER, INST SCI & TECHNOL, MANCHESTER BIOTECHNOL CTR, MANCHESTER M60 1QD, LANCS, ENGLAND
[21] UNIV CATHOLIQUE LOUVAIN, UNITE BIOCHIM PHYSIOL, B-1348 LOUVAIN, BELGIUM
[22] COMMISS EUROPEAN COMMUNITIES, B-1049 BRUSSELS, BELGIUM
[23] DEUTSCH KREBSFORSCHUNGSZENTRUM, INSERM,U375, UNITE ANGEW TUMORVIROL & VIROL APPL ONCOL,ABT 0610, D-69009 HEIDELBERG, GERMANY
[24] JOHN RADCLIFFE HOSP, INST MOLEC MED, OXFORD OX3 9DU, ENGLAND
[25] CTR ETUD SACLAY, CEA,DSV,DEPT BIOL CELLULAIRE & MOLEC, SERV BIOCHEM & GENET MOLEC, F-91191 GIF SUR YVETTE, FRANCE
[26] UNIV BASEL, BIOZENTRUM, INST ANGEW MIKROBIOL, CH-4056 BASEL, SWITZERLAND
[27] VRIJE UNIV AMSTERDAM, BIOCENTRUM AMSTERDAM, INST MOLEC BIOL SCI, DEPT BIOCHEM & MOLEC BIOL, 1081 HV AMSTERDAM, NETHERLANDS
[28] UNIV KONSTANZ, FAK BIOL, D-78434 CONSTANCE, GERMANY
[29] GESELL ANAL TECH & CONSULTING, D-78467 CONSTANCE, GERMANY
[30] CARLSBERG LAB, DEPT PHYSIOL, DK-2500 COPENHAGEN, DENMARK