cell nucleolusmedical dictionary

Within most types of eukaryotic cell nucleus, a distinct region, not delimited by a membrane, in which some species of rrna (RNA, ribosomal) are synthesised and assembled into ribonucleoprotein subunits of ribosomes. In the nucleolus rrna is transcribed from a nucleolar organiser, i.e., a group of tandemly repeated chromosomal genes which encode rrna and which are transcribed by RNA polymerase I.

(12 Dec 1998)

cell migration, cell migration inhibition, cell movement < Prev | Next > cell nucleus, Cello, cellobiase

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