Search on: CELL NUCLEOLUS 
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Descriptor English:   Cell Nucleolus 
Descriptor Spanish:   Nucléolo Celular 
Descriptor Portuguese:   Nucléolo Celular 
Synonyms English:   Cell Nucleoli
Nucleoli, Cell
Nucleolus, Cell
Plasmosome
Plasmosomes  
Tree Number:   A11.284.430.106.279.345.175
Definition English:   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) 
See Related English:   Nucleolus Organizer Region
 
History Note English:   67(65) 
Allowable Qualifiers English:  
CH chemistry CL classification
DE drug effects EN enzymology
GE genetics IM immunology
ME metabolism MI microbiology
PS parasitology PA pathology
PH physiology RE radiation effects
TR transplantation UL ultrastructure
VI virology  
Record Number:   2501 
Unique Identifier:   D002466 

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