Immunogen sequence: VAIRHVQTMY EEAYNDYLKD RGKGNGTLIT FHSTFQCCGK ESSEQVQPTC PKELLGHKNC IDEIETIISV KLQ Highest antigen sequence identity to the following orthologs: Mouse - 88%, Rat - 89%. TSPAN2 is a member of the transmembrane 4 superfamily, also known a