单词	Barr body
释义	Barr body noun ˈbär-  : a densely staining inactivated condensed X chromosome that is present in each somatic cell of most female mammals and is used as a test of genetic femaleness (as in a fetus) called also sex chromatin Word History Etymology Murray Llewellyn Barr †1995 Canadian anatomist First Known Use 1961, in the meaning defined above Medical Definition Barr body noun ˈbär-  : a densely staining inactivated condensed X chromosome that is present in each somatic cell of most female mammals and is used as a test of genetic femaleness (as in a fetus or an athlete) called also sex chromatin
随便看	close defense close down close fertilization close finish close girl close harmony close helm close helmet close in close in (on) close in on close internal juncture close juncture close off close on close on someone's or something's heels close one close one's doors close one's doors (to) close one's doors to close one's eyes to close order close out close position close price

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