From human embryos, hope for 'spare parts'--but research renews debate over use of fetal cells.
Begley
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D004622:Embryo, Mammalian / Q000166:cytology*; D004992:Ethics, Medical; D016332:Fetal Tissue Transplantation / Q000331:legislation & jurisprudence* / Q000592:standards; D006801:Humans; D012106:Research; D013234:Stem Cells; D014481:United States