1. Lorand, L., Nature, 167, 992 (1951).
2. Lorand, L., Fuchs, L. E., and Jacobsen, A., in Sulfur in Proteins, edit. by Benesch, R., et al., 109 (Acad. Press, 1958). Lorand, L., and Konishi, K., Fed. Proc., 21, 62 (1962). A similar activation has been observed also for the fibrin stabilizing factor derived from platelets: Buluk, K., Tanuszki, T., and Albromski, J., Nature, 191, 1096 (1961).
3. Lorand, L., Nature, 166, 694 (1950).
4. See, for example, Halsey, Y. D., in The Proteins, edit. by Neurath, H., and Bailey, K., 2, B, 1135 (Academic Press, 1955).
5. Lorand, L., and Middlebrook, W. R., Biochem. J., 52, 196 (1952).