Summary: T cell activation requires the processing and presentation of antigenic peptides in the context of a major histocompatibility complex (MHC complex). Cross-dressing is a non-conventional antigen presentation mechanism. involving the transfer of preformed peptide/MHC complexes from whole cells. such as apoptotic cells (ACs) to the cell membrane of professional antigen-presentin... https://www.socialstudiesscholar.com/