1. Mokrasch, L. C., Davidson, W. D., and McGilvery, R. W., J. Biol. Chem., 222, 179 (1956).
2. Weber, G., and Cantero, A., Cancer Res., 15, 105 (1955).
3. Weber, G., and Ashmore, J., Exp. Cell Res., 14, 226 (1958).
4. Albert, Z., and Orlowski, M., J. Nat. Cancer Inst., 25, 443 (1960).
5. Freedland, R., and Waisman, H. A., Cancer Res., 20, 1317 (1960).