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Definition of Barr body
1. Noun. (biology) A sex chromosome inactivated by packing in heterochromatin. ¹
¹ Source: wiktionary.com
Medical Definition of Barr body
1. Small dark staining inactivated X chromosome seen in female (XX) cells. According to the Lyon hypothesis, random inactivation occurs. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Barr Body
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