Fibrinogen is a plasma protein that plays in important role in
Hemostasis is the stoppage of bleeding. Fibrinogens play an important role in both primary hemostasis (platelet plug formation) and secondary hemostasis (formation of the clot). Fibrinogen forms bridges between activated platelets to form the platelet plug.
Albumins maintain osmotic balance.
B lymphocytes release antibodies.
Neutrophils and macrophages perform phagocytosis.