1. Ruben, L. N., Vander Hoven, A., and Dutton, R. W. Cell. Immunol. 6:300 (1973).
2. Claman, H. N. and Chaperon, E. A. Transplantation Rev. 1:92 (1969).
3. Rajewski, K., Schirrmacher, V., Nase, S., and Jerne, N. K. J. Exp. Med. 129:1131 (1969).
4. Mitchison, N. A., Taylor, R., and Rajewski, K., in Developmental Aspects of Antibody Formation and Structure. Ed. J. Sterzl, p.547 (Publ. House Czech. Acad. Sci., Prague, 1970).
5. Ruben, L. N. Amer. Zool. 15:93 (1975).