NPR's Richard Knox reports the National Institutes of Health has announced new guidelines allowing federally funded researchers to perform experiments with cells taken from human embryos. Research with embryonic cells is controversial. Scientists say cells taken from human embryos may be helpful in treating many serious diseases, including Parkinson's and diabetes. But some people have moral objections to the research because it involves destroying a human embryo. The NIH guidelines attempt to strike a balance by insisting that federally funded scientists can only use cells taken from embryos that are left over from fertility treatments -- embryos that would otherwise be thrown away.
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