[1] UNIV OXFORD,DYSON PERRINS LAB,OXFORD CTR MOLEC SCI,OXFORD OX1 3QY,ENGLAND
[2] ROYAL BOT GARDENS,JODRELL LAB,RICHMOND TW9 3DS,SURREY,ENGLAND
[3] MONSANTO CO,MONSANTO CORP RES,ST LOUIS,MO 63167
[4] USDA ARS,WESTERN REG RES CTR,BERKELEY,CA 94710
[5] UNIV LONDON,INST CHILD HLTH,DEPT CLIN BIOCHEM,LONDON WC1N 1EH,ENGLAND