First Evidence That Female Human Embryos Adjust The Balance Of X

Courtesy ScienceDaily  Thu, 07/02/2009 - 23:45

Researchers have found the first evidence that a process of inactivating the X chromosome during embryo development and implantation, which was known to occur in mice but unknown in humans, does, in fact, take place in human female embryos prior to implantation in the womb.

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