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Simple columnar epithelium, light micrograph
Light micrograph of gallbladder epithelium. The luminal surface of the gallbladder is lined by a simple columnar epithelium. The epithelial cells are especially tall and have an ovoid nucleus located in the basal third and all of them at the same height, forming a neat row along the epithelium. Gold-coloured pigment grains are often seen in the apical cytoplasm. The luminal surface shows a small projection that corresponds to an aggregate of microvilli. Below the epithelium is the connective tissue of the lamina propria., Creditline:JOSE CALVO / SCIENCE PHOTO LIBRARY
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