SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Gallbladder surface. Coloured scanning electron micrograph (SEM) of a section through the wall of the gallbladder. The columnar epithelium (green) of the surface is covered in microvilli (tiny hair-like projections). The gallbladder stores and concentrates bile produced by the liver and secretes it into the small intestine where it helps the body to digest fat.
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