STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Fish skin. Coloured scanning electron micrograph (SEM) of the folded surface of skin cells from a zebrafish (Danio rerio). The microscopic folds are called microplicae. The larger pattern is formed by the shapes of the skin cells. In a zebrafish, large areas of the skin are normally covered in bony scales. The microplicae are thought to reduce friction. Magnification: x2200 when printed 10cm wide.
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