• 1 August 1971
    • journal article
    • Vol. 9 (2), 249-58
Abstract
Delayed hypersensitivity induced by antigen in Freund's complete adjuvant (FCA) can be depressed by pretreatment with FCA alone beforehand. In the guinea-pig, pretreatment with FCA depressed the 24 hr skin reactions which otherwise followed immunization with bovine γ-globulin, human serum albumin and the arsanil-N-acetyl tyrosine in FCA. The depression ranged from 25 to 75% and 4 hr skin reactions were also depressed. In contrast, haemolytic and cytophilic antibody to BGG was not depressed by pretreatment with FCA before immunization with antigen in FCA.