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- W2020134632 abstract "The MER fraction of attenuated tubercle bacilli of the BCG strain was shown capable of stimulating and modulating the immunological responsiveness of guinea pigs to immunization with DNP conjugates of allogeneic globulin (DNP-GPG) and xenogeneic albumin (DNP-HSA). These antigens are very poorly immunogenic and fail to evoke detectable immune responses following single administration alone. When incorporated in incomplete Freund's adjuvant (IFA) together with the conjugates, MER could substitute for whole tubercle bacilli in the adjuvant mixture, and cause the conjugates to evoke both cellular and humoral reactivity, the former indicated by the development of skin reactions of delayed type (DH) to test injections of the antigens, the latter by the formation of humoral antibodies detected by an indirect hemagglutination (HA) test. When administered in saline together with antigen, MER was ineffective. Pretreatment with MER by any of several different routes 7 or 14 days prior to sensitization enabled a large number of the animals to respond with either DH, circulating antibody formation, or both. Under similar circumstances, pretreatment with Freund's complete adjuvant (FCA) elicited no such preparatory effect. In order to be efficacious in pretreatment, MER had to be given in a saline suspension; activity was lost when it was applied in IFA. MER pretreatment modulated the immune response to subsequent sensitization with the conjugates preferentially towards DH or antibody production, depending on the parameters of treatment and specific immunization. It appeared that when the specific immunogenic stimulus was weak, pretreatment with MER strongly favored DH." @default.
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- W2020134632 date "1973-06-01" @default.
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- W2020134632 title "Potentiation and modulation of the immune response of guinea pigs to poorly immunogenic protein-hapten conjugates by pretreatment with the MER fraction of attenuated tubercle bacilli" @default.
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- W2020134632 doi "https://doi.org/10.1016/0008-8749(73)90201-3" @default.
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