DR S. PEYROL, ISM / SCIENCE PHOTO LIBRARY DR S. PEYROL, ISM / SCIENCE PHOTO LIBRARY
Liver blood vessel. Transmission electron micrograph (TEM) of a section through the liver showing a hepatic sinusoid. Sinusoids are small blood vessels similar to capillaries. Running diagonally from lower left to upper right is the endothelium, the lining of the sinusoid. To the left of the endothelium is the lumen (interior) of the sinusoid, which contains the blood and cellular fragments. Immediately to the right of the epithelium is the space of Disse and to the right of that is a hepatocyte (liver cell), whose nucleus is in the bottom right corner. Spread throughout the hepatocyte and sinusoid are glycogen particles, the main carbohydrate energy store in humans.
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