1. Pennisi, E. (1997) The lamb that roared. Science, 278, 2038.
2. Macklin, R. (1994) Splitting embryos on the slippery slope: ethics and public policy. Kennedy Inst. Ethics J.
4, 215 - 218.
3. Cole-Turner, R. (1997) At the beginning, in Human Cloning: Religious Responses, Cole-Turner, R., ed., Westminster John Knox Press, Louisville, KY, p. 123.
4. Kass, L. R. (1997) The wisdom of repugnance. The New Republic, June 2, 23.
5. Robertson, J. A. Children of Choice: Freedom and the New Reproductive Technologies, Princeton University Press, Princeton, NJ, p. 18. For those who oppose human cloning, law professor Robertson has become an indispensable focus.