This protein BDA or BDB all prolonged acitivatedpartial thromboplsatin time(APTT) ,thrombin time (TT)and prothrombintime(PT),but there were some different charater between them .

• 在体内外凝血实验中,BDA、BDB 均能明显延长活化部分凝血活酶时间(APTT)、凝血时间(PT)及凝血酶原时间(TT),但二者的三个指标有明显差异性。