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. 1984 Jan;51(1):35-43.

The role of rabbit Ia molecules in immune functions as determined with the use of an anti-Ia monoclonal antibody

S A Lobel, K L Knight

The role of rabbit Ia molecules in immune functions as determined with the use of an anti-Ia monoclonal antibody

S A Lobel et al. Immunology. 1984 Jan.

Abstract

We have produced a mouse anti-rabbit Ia monoclonal antibody (MAb) that detects an isotypic determinant on all rabbit Ia molecules. This MAb precipitates three polypeptide chains with molecular weights of 28,000, 31,000 and 35,000, corresponding to the Ia beta, Ii and alpha chains, respectively. The anti-Ia MAb inhibits the mixed lymphocyte culture by 80%. In secondary in vitro immune response cultures, the anti-Ia MAb inhibits the proliferative response to bovine insulin and poly (Glu50Tyr50). In studies on mitogenesis it was found that the anti-Ia MAb inhibited the response to LPS but not to concanavalin A or phytohaemagglutinin. The effect of the anti-Ia MAb on other mitogens was found to vary from rabbit to rabbit.

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