a series of monoclonal antibodies ( r10 , r18 , bric 13 , bric 14 ) to the erythrocyte sialoglycoprotein alpha ( syn : glycophorin a ) showed the number of antigen sites to be from 0.3 x 10 ( 6 ) to 1.2 x 10 ( 6 ) per erythrocyte and supported the conclusion that the wrb antigen is located on this protein .
C0017955
glycophorin a
C0014792
erythrocyte