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False-colour SEM of an ulcer

False-colour SEM of an ulcer

M280/0018

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Credit

PROFESSOR J. JAMES / SCIENCE PHOTO LIBRARY PROFESSOR J. JAMES / SCIENCE PHOTO LIBRARY

Caption

False-colour scanning electron micrograph (SEM) of an ulcer in the stomach of a rat. With a pH of 2, the juices produced by the stomach are highly acidic. Normally, the stomach lining is protected by a layer of mucus, but when this barrier is ineffective, the lining itself starts to be digested & the result is an ulcer. The micrograph shows a smooth border of epithelial cells surrounding the round, granular wound; these cells are the body's attempt to repair the injury by covering the ulcer. Around the smooth cells can be seen the rough texture of healthy gastric mucosa. Pink tint. Reference: MICROCOSMOS, figure 2.39, page 35.

Release details

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