Teitelbaum is the past president of the Federation of American Societies for Experimental Biology — the largest coalition of biomedical research associations in the United States — Teitelbaum is a strong supporter for therapeutic cloning. Somatic cell nuclear transfer, as it is also known, could hold the potential for helping and even curing millions of Americans suffering from diseases such as cancer, Parkinson's, heart disease and Alzheimer's. Teitelbaum says the scientific community has done a poor job explaining the concept of therapeutic cloning, which isn't a reproductive process, since no whole organism results. He says the promise of the research is that patients could use their own cells to ward off serious illnesses. Teitelbaum can explain some of the scientific challenges, realities and ethical implications of cloning.