Immunogen sequence: SHKDEVIKEV QEFYKDTYNK LKTKDEPQRE TLKAIHYALN CCGLAGGVEQ FISDICPKKD VLETFTVKSC PDAIKEVFDN KFHI; Positive Samples: Mouse kidney; Cellular Location: Cell membrane, Membrane, Multi-pass membrane protein. CD9 antigen is a glycoprotein expre