The interaction between blood serum and tissue extract in the coagulation of the blood: II. A comparison between the effects of the stroma of erythrocytes and of tissue extracts, unheated and heated, on the coagulation of the blood, and on the mechanism of the interaction of these substances with blood serum - Loeb, L; Fleisher, MS; Tuttle, L (J Biol Chem, 1922)