| 单词 | Barr body |
| 释义 | Barr body /bahr/ a condensed, inactivated X chromosome present in most female mammals in the nuclei of all cells except the germ cells: used, as in sports competitions, to verify that an individual is genetically female. Also called sex chromatin. [1960-65; after Murray L. Barr (born 1908), Canadian physician] |
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