1. Sinnhuber, R.O., Lee, D.J., Wales, J.H., Landers, M.K., and Keyl, A.C. (1974) J. Natl. Cancer Inst. 53, 1285–1288.
2. Sinnhuber, R.O., Hendricks, J.D., Putnam, G.B., Wales, J.H., Pawlowski, N.E., Nixon, J.E., and Lee, D.J. (1976) Fed. Proc. 35, 505.
3. Hendricks, J.D., Sinnhuber, R.O., Loveland, P.M., Pawlowski, N.E., and Nixon, J.E. (1980) Science 208, 309–311.
4. National Research Council Nutritional Requirements of Laboratory Animals, p. 47, Washington, DC, National Academy of Sciences.
5. Tinsley, I.J., Schmitz, J.A., and Pierce, D.A. (1981) Cancer Res. 41, 1460–1465.