Presentation of abundant endogenous class II DR-restricted antigens by DM-negative B cell lines.

Abstract excerpt

Peptides derived from endogenous and exogenous antigens compete for binding and presentation via class II molecules. Studies with mutant B cell lines defective in exogenous antigen presentation suggest that HLA-DM molecules facilitate the interaction of foreign peptides and class II molecules. In contrast, presentation of self antigens is not strictly dependent upon HLA-DM, as demonstrated by the ability of these...

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