The interaction between fibrinogen and 3H-L-arginine cationic peptides derived from fibrosarcoma in the presence of thrombin.
It has been found that cationic protein breakdown product--3H-L-arginine labelled peptide fraction--interacts with fibrinogen in the presence of thrombin. The formation of the fibrin clot under these conditions makes the clot resistant to the fibrinolytic action of plasmin.