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After we had seen how relatively easy it was to change the switches in mouse embryos, we thought that perhaps the same could be true of human embryos. In IVF, you also have the embryo for a brief peri
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If inheritance was not just about DNA, if these gene switches were so important, just what could turn them on or off? Stephanie and Emend Mullins have two children, Karen and Charlotte. When we were t
基因外遗传现象
Broadcast: Mar 18, 2003 The World Health Organization said it still does not know the cause of a mysterious respiratory illness that is being blamed for the deaths of nine people. The disease, known a
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By Melinda Smith Washington 23 July 2007 It has been estimated that ten percent of people worldwide suffer from Restless Leg Syndrome . RLS is a neurological disorder that makes it difficult to sit or lie still for long periods of time. The disorder
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健康与经济