MeSH Browser

MeSH Heading: X Chromosome Inactivation
Tree Number(s): G05.308.203.249.970
Unique ID: D049951
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D049951
Scope Note: A dosage compensation process occurring at an early embryonic stage in mammalian development whereby, at random, one X CHROMOSOME of the pair is repressed in the somatic cells of females.
Entry Term(s): Lyon Hypothesis; Lyonization; X Inactivation; X-Inactivation
Previous Indexing: Dosage Compensation, Genetic (1982-2005); X Chromosome (1983-2005)
Public MeSH Note: 2006; see DOSAGE COMPENSATION (GENETICS) 1982-2005
History Note: 2006; use DOSAGE COMPENSATION, GENETIC 1982-2005
Date Established: 2006/01/01
Date of Entry: 2005/06/30
Revision Date: 2016/06/17

Allowable Qualifiers: drug effects (DE)

ethics (ES)

genetics (GE)

immunology (IM)

physiology (PH)

radiation effects (RE)

Concept UI: M0006765
Scope Note: A dosage compensation process occurring at an early embryonic stage in mammalian development whereby, at random, one X CHROMOSOME of the pair is repressed in the somatic cells of females.
Terms: X Chromosome Inactivation Preferred Term
Term UI T606275
Date08/26/2004
LexicalTag NON
ThesaurusID NLM (2006); X-Inactivation
Term UI T013155
Date02/23/1981
LexicalTag NON
ThesaurusID UNK (19XX); X Inactivation
Term UI T013156
Date02/23/1981
LexicalTag NON
ThesaurusID UNK (19XX); Lyonization
Term UI T606240
Date08/26/2004
LexicalTag EPO
ThesaurusID NLM (2006)

X Chromosome Inactivation MeSH Descriptor Data 2025