STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Skin blood vessel. Coloured scanning electron micrograph (SEM) of a small blood vessel in the dermis of the skin. The blood vessel is filled with red blood cells (erythrocytes, red) which carry oxygen around the body. Surrounding the blood vessel is connective tissue (pink) which gives the skin its tone and elasticity. Magnification unknown.
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