Cell structure

Numéro d’image : 13387595
Cell structure
Cell structure. Transmission electron micrograph (TEM) of a section through an undifferentiated cell from the intestinal tract, showing rough endoplasmic reticulum (ER, thin purple lines), nuclei and mitochondria (purple and red round structures).The function of RER is to assemble amino acids into peptide chains which, with further processing, form proteins. Rough endoplasmic reticulum is present inside most cells and its abundance is proportional to the level of protein synthesis within the cell. Undifferentiated cells like this serve as replacements for cell types both in the glands and villi of the intestine. Magnification: x4000 when printed 10 centimetres wide.
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 4940 px × 3538 px
Model Release : Non requis
Restrictions : -

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