• 1 February 1974
    • journal article
    • Vol. 16  (2) , 203-12
Abstract
Guinea-pigs made tolerant to dinitrochlorobenzene (by prior intracardiac injection of dinitrobenzene sulphonate) failed to give positive skin reactions after contact sensitization, but nevertheless had peritoneal cells which reacted with the hapten in macrophage migration inhibition (MMI) tests. This reactivity was blocked in vitro by the addition of serum from tolerant animals but not by serum from hypersensitive animals.

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