Immunogen sequence: LPAWYTLHGE VSSSQPWEVP FVMWFFKQKE KEDQVLSYIN GVTTSKPGVS LVYSMPSRNL SLRLEGLQEK DSGPYSCSVN Highest antigen sequence identity to the following orthologs: Mouse - 64%, Rat - 62%. ESAM is a 55-kDa membrane protein composed of 2 extracellula