Taber's Medical Dictionary
Barr body
(băr )
[Murray L. Barr, Canadian anatomist, 1908-1995]
Sex chromatin mass seen within the nuclei of normal female somatic cells. According to the Lyon hypothesis, one of the two X chromosomes in each somatic cell of the female is genetically inactivated. The Barr body represents the inactivated X chromosome.
Barr bodyis the Taber's Online Word of the day!
Citation
Venes, Donald, editor. "Barr Body." Taber's Medical Dictionary, 25th ed., F.A. Davis Company, 2025. Taber's Online, www.tabers.com/tabersonline/view/Tabers-Dictionary/742294/all/Barr body.
Barr body. In: Venes DD, ed. Taber's Medical Dictionary. F.A. Davis Company; 2025. https://www.tabers.com/tabersonline/view/Tabers-Dictionary/742294/all/Barr body. Accessed June 5, 2026.
Barr body. (2025). In Venes, D. (Ed.), Taber's Medical Dictionary (25th ed.). F.A. Davis Company. https://www.tabers.com/tabersonline/view/Tabers-Dictionary/742294/all/Barr body
Barr Body [Internet]. In: Venes DD, editors. Taber's Medical Dictionary. F.A. Davis Company; 2025. [cited 2026 June 05]. Available from: https://www.tabers.com/tabersonline/view/Tabers-Dictionary/742294/all/Barr body.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Barr body
ID - 742294
ED - Venes,Donald,
BT - Taber's Medical Dictionary
UR - https://www.tabers.com/tabersonline/view/Tabers-Dictionary/742294/all/Barr body
PB - F.A. Davis Company
ET - 25
DB - Taber's Online
DP - Unbound Medicine
ER -