Images Dated 19th February 2002
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Choose from 20 pictures in our Images Dated 19th February 2002 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.
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Featured 19 Feb 2002 Print
Heart blood vessels, SEM
Heart blood vessels. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through cardiac muscle, exposing the blood vessels of the heart. Large blood vessels are seen lined with endothelium (the single-celled layer coating the inside of blood vessels, brown). The smaller blood vessels (capillaries, small holes) supply blood to all parts of the heart. The blood vessels have been emptied of blood. Cardiac (heart) muscle continually contracts (under subconscious control) to pump blood round the body. As such, it requires a rich supply of oxygenated blood, explaining the vascularity (presence of many blood vessels) of this tissue. Magnification: x300 at 6x7cm size
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
