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nucleolus

n. 核,细胞核,核仁

核,细胞核,核仁

WordNet (r) 3.0 (2006) (WordNet)

nucleolus
n 1: a small round body of protein in a cell nucleus; such
organelles contain RNA and are involved in protein
synthesis [synonym: {nucleolus}, {nucleole}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Nucleolus \Nu*cle"o*lus\, n.; pl. {Nucleoli}. [L., a little nut,
dim. of nucleus.]
1. A little nucleus.
[1913 Webster]

2. (Biol.) A small rounded body contained in the nucleus of a
cell or a protozoan.
[1913 Webster]

Note: It was termed by Agassiz the entoblast. In the
protozoa, where it may be situated on one side of the
nucleus, it is sometimes called the endoplastule, and
is supposed to be concerned in the male part of the
reproductive process. See {Nucleus}.
[1913 Webster]

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Nucleolus - Wikipedia
It is best known as the site of ribosome biogenesis The nucleolus also participates in the formation of signal recognition particles and plays a role in the cell's response to stress [2] Nucleoli are made of proteins, DNA and RNA, and form around specific chromosomal regions called nucleolar organizing regions
Nucleolus - Definition, Structure, Function
Nucleolus Definition The nucleolus is a dense, spherical, membrane-less structure found within the nucleus of eukaryotic cells It is the site where ribosomal RNA (rRNA) transcription, processing, and ribosome subunit assembly occur
Nucleolus | Definition, Function, Ribosome, rRNA, Structure, Facts . . .
Inside the nucleus is a syrupy nucleoplasm that contains the threadlike chromatin, which contains the cell's DNA, and at least one nucleolus, the site of rRNA production
Nucleolus: definition, structure and function | Kenhub
The nucleolus (plural: nucleoli) is a dark-staining, typically spherical body within the nucleus of a cell It is a dense non-membrane-bound structure which forms a specialized subdomain of the nucleus that is responsible for the synthesis of ribosomal subunits
Nucleolus - an overview | ScienceDirect Topics
Nucleoli are small basophilic spherical bodies located within the nucleus, primarily involved in the synthesis of ribosomal RNA and the assembly of ribosomal subunits, typically forming one or two prominent structures per nucleus depending on the cell type
Nucleolus Function in an Animal Cell: Understanding Its Role
The nucleolus is a specialized structure found within the nucleus of an animal cell It is often described as a “factory” because of its role in producing ribosomes, the cellular machines responsible for protein synthesis

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