1. Jerne, N. K., Nordin, A. A., and Henry, C., in Cell-Bound Antibodies, 109 (Wistar Institute Press, Philadelphia, 1963).
2. Šterzl, J., and Mandel, L., Folia Microbiol., 9, 173 (1964).
3. Šterzl, J., and Ríha, I., (unpublished observations).
4. Humphrey, J. H., in Complement, 175 (Churchill, London, 1965).
5. Říha, I., Folia Microbiol., 9, 304 (1964).