Positive Samples: HT-29, MCF7 Immunogen sequence: NYDLKNHMRV HTGLRPYQCD SCCKTFVRSD HLHRHLKKDG CNGVPSRRGR KPRVRGGAPD PSPGATATPG APAQPSSPDA RRNGQEKHFK DEDEDEDVAS P. Plays a key role in the instruction of early lymphoid progenitors to develop into B lineage