False-col Tem Of Nucleus On Protein Secreting Cell
by Cnri/science Photo Library
Title
False-col Tem Of Nucleus On Protein Secreting Cell
Artist
Cnri/science Photo Library
Medium
Photograph - Photograph
Description
False-colour transmission electron micrograph (TEM) of a typical nucleus of an active, protein secreting cell (nucleus at left). The nuclear envelope (separating nucleus from cytoplasm) consists of 2 layers of membrane, broken at intervals by nuclear pores (3 are visible here). The pores permit the exchange of metabolites between the nucleus & cytoplasm, & probably allow RNA molecules to enter the cytoplasm. The material coloured orange is a type of chromatin (the genetic material of the cell - DNA) which is active in protein synthesis: the colouring technique shows material converging on nuclear pores. Magnification: X 10,000 at 35mm size.
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September 24th, 2018
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