Immunogen sequence: VTSLTACLVD QSLRLDCRHE NTSSSPIQYE FSLTRETKKH VLFGTVGVPE HTYRSRTNFT SKYNMKVLYL SAFTSKDEGT YTCALHHSGH SPPISSQNVT VLRDKLVKCE GISLLAQNTS WL. CD90 (Thy 1) antigen is a GPI linked glycoprotein member of the Immunoglobulin super family. CD90