[1] UNIV NOTTINGHAM, SCH AGR, DEPT APPL BIOCHEM & FOOD SCI, LOUGHBOROUGH LE12 5RD, LEICS, ENGLAND
[2] SOUTHAMPTON GEN HOSP, TENOVUS RES LAB, SOUTHAMPTON SO9 4XY, HANTS, ENGLAND
[3] UNIV SHEFFIELD, KREBS INST BIOMOLEC SCI, DEPT MOLEC BIOL & BIOTECHNOL, SHEFFIELD S10 2TN, S YORKSHIRE, ENGLAND