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A new, improved approach for the production of antibodies against T-2 toxin and diacetoxyscirpenol (DAS) was developed. The method involves the use of immunogens which were prepared by conjugating O-carboxymethoxyl oxime (CMO) derivatives of both toxins to bovine serum albumin (BSA). Isomers a and b of CMO-T-2 toxin and isomer b of CMO-DAS were tested. Antibodies against both toxins were demonstrated as early as 4 weeks after immunization. a-CMO-T-2-BSA conjugate was a better immunogen than the b isomer, and the highest titers (6,000) were reached 14 weeks after immunization and one booster injection. Antibody titers for rabbits immunized with the b isomer of CMO-T-2 never reached more than 2,000. The specificity of antibodies obtained from rabbits after immunization with CMO-T-2-BSA was similar to that of hemisuccinate-T-2-BSA. Anti-b-T-2 antibodies had slightly higher cross-reactivity with H-T-2 toxin than did the antibody obtained from rabbits immunized with the conjugate of the a isomer. The relative cross-reactivities of anti-a-CMO-T-2 antibody with T-2, acetyl-T-2, H-T-2, T-2-triol, 3'-OH-T-2, and T-2 tetraol were 1, 4.5, 5.7, 250, 500, and 3,000, respectively. The relative cross-reactivities of anti-b-T-2 antibody with T-2, acetyl-T-2, H-T-2, and T-2 triol were 1, 2, 3, and 488, respectively. Antibodies against b-CMO-DAS showed a high degree of cross-reactivity with monoacetoxyscirpenols (MAS). The relative cross-reactivities of anti-B-DAS antibody with DAS, 4-MAS, 15-MAS, acetyl-deoxynivalenol, T-2-toxin, acetyl-T-2, and neosolaniol were 1, 4, 5, 76, 107, 147, and 266, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)

Improved method for production of antibodies against T-2 toxin and diacetoxyscirpenol in rabbits