HLA-C and neoplasm: The extent of the uptake of B16/OVA cells by APCs within treated tumor lesions can be evaluated by the presentation of the peptide SIINFEKL on MHC molecules on the APCs, since the internalized OVA is processed within the APCs by being converted to peptides, and the immunodominant SIINFEKL peptide is transported on MHC molecules and presented on the cell membrane of the APC.