Bush stem cell decision limits research to existing cell lines.
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D001675:Bioethics; D005380:Financing, Government / Q000191:economics / Q000331:legislation & jurisprudence* / Q000592:standards; D006291:Health Policy / Q000331:legislation & jurisprudence*; D006801:Humans; D012070:Religion and Science; D012106:Research / Q000191:economics / Q000331:legislation & jurisprudence* / Q000592:standards; D013234:Stem Cells / Q000166:cytology; D014481:United States