1. Fitzgerald, R. J., and Lee, M. E., J. Immun., 52, 127 (1946). Foster, R. A. C., J. Bact., 56, 795 (1948).
2. DeMars, R. I., Luria, S. E., Fisher, H., and Levinthal, C., Ann. Inst. Pasteur, 84, 113 (1953).
3. Hershey, A. D., Cold Spring Harb. Symposium Quant. Biol., 11, 67 (1946).
4. Luria, S. E., Cold Spring Harb. Symposium Quant. Biol., 16, 463 (1951).
5. Bertani, G., Genetics, 36, 598 (1951).