False-colour transmission electron micrograph of a pancreatic acinar cell from the bat Myotis lucifugus. At center is the nucleus,containing a nucleolus (red). The nucleus is bound by a double membrane separated by a small space,the perinuclear space. Nuclear materials (ions & small molecules) diffuse across the inner membrane into the space & out to the cytoplasm. Nuclear pores (gaps) punctuating the membrane represent a second transport system,conveying larger molecules. Ribosomes adhere to the outer nuclear membrane & to the rough endoplasmic reticulum (parallel layers) in the cytoplasm. They are the sites of cellular protein synthesis. Original B/W print is G455/005 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Fawcett, Dr. Don |
Taille de l’image : | 3613 px × 4848 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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