Epithelium is a tissue layer that lines surfaces and cavities of the body, providing protection, absorption, and secretion. It consists of closely packed cells with minimal extracellular matrix. The term is used in biology and medicine to describe the cellular sheet forming the outer layer of organs and structures such as skin and the lining of the gut.
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1:02Enteritis
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0:58Epidural
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1:01Epiglottis
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1:05Epistaxis
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1:01Epithelium
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1:04Erythrocyte
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1:06Esophagitis
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1:08Esophagoscopy
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1:02Esophagus
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1:10Gastroesophageal
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