this is most welcome, particularly for investigators working on strategies for cell replacement the United States, who must be feeling something of a dj vu in face of yet another presidential moratorium, this time limiting the number of human stem cell lines that can be used for research and treatment. Ironically, this frustration recently led California voters to approve a $3 billion initiative to fund stem cell research, which some have predicted will lead to a "gold rush" on stem cell research (9). Regardless of whether or not this proves to be the case, it can be hoped that this new initiative will serve as a beacon of hope for scientists and patients alike as we press ahead in this challenging area of science that appears to promise so much for the treatment of human diseases.
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Raphael Clynes (2005) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: