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Home > All Images > 1991 > October > 21 Oct 1991

Images Dated 21st October 1991

Available as Framed Photos, Photos, Wall Art and Gift Items

Choose from 2 pictures in our Images Dated 21st October 1991 collection for your Wall Art or Photo Gift. Popular choices include Framed Photos, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


Nucleus & other organelles of typical animal cell Featured 21 Oct 1991 Print

Nucleus & other organelles of typical animal cell

Illustration showing the structural relationship between the endoplasmic reticulum (ER, pink) and nucleus (centre, spherical, with two nucleoli). The ER is a network of paired membranes throughout the cytoplasm. It is continuous with the nucleus (at lower right) and may connect with adjacent cells through junctions known as plasmodesmata, which relates to its importance in the transport of materials within and out of the cell. The ER may bear ribosomes (red spheres, sites of protein synthesis) on its surface (rough ER); other regions are devoid of ribosomes (smooth ER). Also shown are mitochondria (green, cigar-shaped), and the Golgi Body (yellow, bottom)

© JOHN BAVOSI/SCIENCE PHOTO LIBRARY