EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Capillary and red blood cells. Coloured scanning electron micrograph (SEM) of a section through a capillary (long, red), showing red blood cells (erythrocytes, round, red), inside. Capillaries are the smallest of the body's blood vessels. Red blood cells carry oxygen around the body. Magnification: x2670, when printed 10cm wide.
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