1. Baney, R. N., Vasquez, J. J., and Dixon, F. J., Proc. Soc. Exp. Biol. and Med., 109, 1 (1962). Mäkelä, O., and Nossal, G. J. V., J. Exp. Med., 115, 231, (1962). Sado, T., and Leonard, M. R., Radiat. Res., 19, 227 (1963). Urso, P., and Makinodan, T., J. Immunol., 90, 897 (1963). Urso, P., and Gengozian, N., Nature, 203, 1391 (1964).
2. Berenbaum, M. C., Brit. Med. Bull., 20, 154 (1964). Schwartz, R. S., Prog. Allergy, 9, 246 (1965).
3. Jerne, N. K., and Nordin, A. A., Science, 140, 405 (1963). Jerne, N. K., Nordin, A. A., and Henry, C., in Cell-bound Antibodies, edit. by Amos, B., and Koprowski, H., 109 (Wistar Institute Press, Philadelphia, 1963).
4. Zaalberg, B., Nature, 202, 1231 (1964).
5. Berenbaum, M. C., and Brown, I. N., Immunology, 7, 65 (1964).