part_of cell-mediated immunity pathway antigen processing and presentation pathway 2010-11-01T05:17:15Z PW:0000825 The pathways of antigen processing and presentation assure the generation of peptides that have the structural attributes necessary for the association with and their placement near major histocompatibility complex (MHC) molecules. Protein antigens present in vesicular compartments generate class II peptides, those in cytosol, class I. antigen processing and presentation pathway vpetri