1. Franklin, E. C., and Stanworth, D. R., J. Exp. Med., 114, 521 (1961).
2. Heremans, J. F., and Heremans, M.-Th., Acta Med. Scand., 170, Supp., 367 27 (1961).
3. Korngold, L., and Lipari, R., Cancer, 9, 262 (1956).
4. Heremans, J. F., Les Globulines Sériques du Système Gamma (Editions Arscia, Brussels, 1960).
5. Porter, R. R., Biochem. J., 73, 119 (1959).