NLM Logo

Cell Nucleolus MeSH Descriptor Data 2022


MeSH Heading
Cell Nucleolus
Tree Number(s)
A11.284.430.106.279.345.175
Unique ID
D002466
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D002466
Scope Note
Within most types of eukaryotic CELL NUCLEUS, a distinct region, not delimited by a membrane, in which some species of rRNA (RNA, RIBOSOMAL) are synthesized and assembled into ribonucleoprotein subunits of ribosomes. In the nucleolus rRNA is transcribed from a nucleolar organizer, i.e., a group of tandemly repeated chromosomal genes which encode rRNA and which are transcribed by RNA polymerase I. (Singleton & Sainsbury, Dictionary of Microbiology & Molecular Biology, 2d ed)
Entry Term(s)
Cell Nucleoli
Plasmosome
NLM Classification #
QU 350
See Also
Nucleolus Organizer Region
Public MeSH Note
67
History Note
67(65)
Date Established
1967/01/01
Date of Entry
1999/01/01
Revision Date
2003/07/09
Cell Nucleolus Preferred
page delivered in 0.161s