Conversion of fibrinogen to fibrin is by
Thrombin conves soluble fibrinogen to fibrin monomer Prothrombin is the precursor or thrombin Factor XIII is fibrin stabilization factor Kallikrein activates factor XII Ref: Medical Physiology Indu Khurana 2015 edition page No:154
Prothrombin
Factor XIII
Thrombin
Kallikrein
Cardiovascular system