venom factor may be capable of conferring activated c3 to the c3 receptor of b lymphocytes : preincubation of lymphoid cells with homologous serum or plasma , 10 mm edta , and sepharose-coupled venom factor converted with serum to an enzyme active against c3 , inhibited their capacity to subsequently form rosettes with sheep erythrocytes sensitized with amboceptor and c5-deficient mouse complement .
C0032105
plasma
C0229671
serum