Fibrinogen and the ultralong-range interaction of human erythrocytes

Fibrinogen, purified by a new method, does not transmit the ultralong-range interaction of erythrocytes. It can be converted into a transmitter by the addition of a preparation of clotting factors used clinically in the treatment of hemophilia B. It is suggested that the addition of the clotting factors induces a conformational change in fibrinogen, which can then polymerize.

Isolation o human fibrinogen of high purity and in high yield using polyethylene glycol 1000

Fibrinogen was isolated from human plasma using a polyethylene glycol 1000 fractionation procedure that eliminates problems of denaturation, degradation and contamination encountered with other procedures (1). The technique is simple, rapid, gives a high yield and gram amounts of fibrinogen can be readily obtained.