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Barr body

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barr body

Main Entry:: Barr body
Pronunciation:: \ˈbär-\
Function:: noun
Etymology:: Murray Llewellyn Barr †1995 Canadian anatomist
Date:: 1961

: 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

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