Images Dated 11th March 2003
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Choose from 30 pictures in our Images Dated 11th March 2003 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.
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Featured 11 Mar 2003 Print
Insulin-secreting pancreatic cells
Insulin production. Artwork of a section through beta cells secreting insulin (blue spheres) into a capillary (small blood vessel, grey tube). Beta cells are found in the pancreas. Energy-producing structures (mitochondria, green) are seen within the cells, as well as the folded membrane (upper centre), called the endoplasmic reticulum, where such proteins can be synthesised and stored. The insulin in the cell is contained within secretory granules (pink, round). These migrate through the cell to release their insulin cargo into the bloodstream. Insulin is a hormone that controls blood sugar level by promoting glucose storage in the liver and muscles
© JOHN BAVOSI/SCIENCE PHOTO LIBRARY
Featured 11 Mar 2003 Print
False-col TEM of polio virus particles
False-colour transmission electron micrograph (TEM) of numerous virions (virus particles) of the polio virus, the causative agent of poliomyelitis. Polioviruses belong to the enterovirus sub-group of the picornaviruses (small RNA viruses) & occur as 3 antigenically-distinct types; type 1 is responsible for the majority of polio epidemics. Infection occurs through the mouth, with the virus travelling via lymph nodes in the gut & upper respiratory tract to the central nervous system, where viral replication (especially in horn cells of spinal cord) may produce paralytic poliomyelitis (causing death or severe & permanent disability). Magnification: x29, 400 at 35mm size
© CNRI/SCIENCE PHOTO LIBRARY
