Immunogen sequence: DKKYRCVSGT QVHMNNVTVT LHDATIQAYL SNSSFSRGET RCEQDRPSPT TAPPAPPSPS PSPVPKSPSV DKYNVSGTNG TCLLASMGLQ LNLTYERKDN T Positive Samples: HT-29, 293T, BT-474; Cellular Location: Cell membrane, Endosome membrane, Late endosome, Lysosome membra