1. Fishbein, W. N., and Winter, T. S., Fed. Proc., 23, 385 (1964).
2. Fishbein, W. N., Winter, T. S., and Davidson, J. D., J. Biol. Chem. (in the press).
3. Fishbein, W. N., and Carbone, P. P., J. Biol. Chem. (in the press).
4. Unpublished data from several laboratories suggest that the toxicity of AHA for animals is several times lower than that of hydroxyurea, which itself has an LD50 for mice of 7.5 g/kg.
5. Kobashi, K., Hase, J., and Uehara, K., Biochim. Biophys. Acta, 65, 380 (1962).