using both human and murine ctl that were specific for either hla-a2.1 or hla-a2.2 , four types of epitopes were identified : 1 ) epitopes that were insensitive to substitutions at either residues 9 , 43 , and 95 , or residue 156 but were lost when all four positions were changed ;
C0086418
human
C0019733
hla-a2