Evaluation of ELISA for detectingin vivochemical immunomodulation

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Abstract
Immunotoxicology is a relatively new field of investigation and is becoming recognized and used by toxicologists involved in drug and chemical testing. The purpose of this study was to evaluate the enzyme‐linked immunosorbent assay (ELISA) as a means of quantitating humoral immune responses in rats exposed to immunomodulating chemicals. The ELISA proved to be highly sensitive and quantitative, simple to perform, and reliable. The assay is also economically feasible and automated so that large numbers of samples can be analyzed at one time. The antigen used in the study was bovine serum albumin, and the immunosuppressive chemicals used to validate the system were lead, poly chlorinated biphenyl, cyclophosphamide, and dexamethasone. Practical appliation of the procedure to immunotoxicology testing is discussed.

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