Mesh term Cell Nucleolus
Browse to parent terms:Intranuclear Space
Description
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 and Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)Search for this term in our Faculty Database
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