1. Mota, I., thesis, University of São Paulo (1953); Brit. J. Pharmacol., 12, 453 (1957). Mota, I., and Ishii, T., ibid., 15, 82 (1960).
2. Carter, P. B., Higginbotham, R. D., and Dougherty, R. D., J. Immunol., 79, 259 (1957).
3. Mota, I., and Vugman, I., Nature, 177, 427 (1956). Mota, I., J. Physiol., 147, 425 (1959).
4. Humphrey, J. H., and Mota, I., Immunol., 2, 31 (1959).
5. Kabat, E. A., and Boldt, M. H., J. Immunol., 48, 181 (1944).