Hence the question arises, whence are derived thrombogen and thrombokinase?
If plasma containing thrombogen but no thrombokinase be treated with a saline extract of any tissues it will soon clot.
The plasma collected from such blood is found to contain thrombogen but no thrombokinase.
thrombokinase throm·bo·ki·nase (thrŏm'bō-kī'nās, -nāz)
thromboplastin throm·bo·plas·tin (thrŏm'bō-plās'tĭk)
A plasma protein present in tissues, platelets, and white blood cells necessary for the coagulation of blood and, in the presence of calcium ions, necessary for the conversion of prothrombin to thrombin. Also called factor III, platelet tissue factor, thrombokinase.