factor viii procoagulant ( viii : c ) activity , factor viii coagulant antigen ( viii : cag ) , von willebrand ristocetin cofactor ( viiir : rc ) activity , factor viii-related antigen ( viiir : ag ) , and plasma fibronectin ( cig ; cold-insoluble globulin ) were measured in the heparin precipitable fraction ( hpf ) and heparin supernatant fraction ( hs ) of normal human plasma .
C0015506
factor viii
C0042974
von willebrand