Abstract
Contact sensitivity to DNFB, induced by skin painting Balb/c mice with DNFB had no influence on the induction of carrier determined tolerance to DNP. In contrast, contact sensitivity to DNFB, elicited in complete Freund's adjuvant, prevented induction of tolerance to DNP. This effect was not due to the adjuvant alone and was hapten specific since contact sensitivity induced by OCBC in complete adjuvant had no influence on tolerance induction to DNP. In addition, in mice primed with DNFB in complete Freund's adjuvant, the tolerogen becomes immunogenic. It is suggested that the T-cell mediating tolerance to DNP-autologous IgG is different from the T-cell mediating contact sensitivity to DNP autologous carrier. DNFB in complete adjuvant may augment not only contact-sensitized T-cells, which mediate contact sensitivity, but also T-cells which have helper function in the antibody response to DNP.
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