employing electrophoretically ( sds-page ) separated normal platelet membrane proteins in an immunoblot assay , serum igg and igm antibodies were found to be directed to antigenic determinants situated on glycoprotein gp iib ( 140 kda ) in all patients , but also on smaller proteins of molecular weights between 30 and 52 kda .
C0025252
membrane proteins
C0033684
proteins