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Cervix-cytology

Normal cells / non-neoplastic findings

Barr body


Reviewer: Nat Pernick, M.D., PathologyOutlines.com, Inc. (see Reviewers page)
Revised: 20 September 2012, last major update June 2011
Copyright: (c) 2006-2011, PathologyOutlines.com, Inc.

Definition
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● Inactive X chromosome, present on nuclear margin, formed by telomere association (Proc Natl Acad Sci USA 1991;88:6191, Wikipedia)
● Identified by Dr. Murray Barr (Wikipedia, WhoNamedIt.com)

Cytology description
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● Darkly stained body attached to nuclear membrane

Cytology images
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Various images


Drawing

End of Cervix-cytology > Normal cells / non-neoplastic findings > Barr body


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