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Portal vein
portal vein (portal circulation; portal system) Any vein that collects blood from one network of capillaries and transports it directly to a second capillary network in another region of the body, without returning to the heart. See hepatic portal system.... Read more |
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Portal vein bypass
Portal vein bypass Definition Portal vein bypass surgery diverts blood from the portal vein into another vein. It is performed when pressure in the portal vein is so high that it causes internal bleeding from blood vessels in the esophagus. Purpose The portal vein... Read more |
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Portales
Portales , city (1990 pop. 10,690), seat of Roosevelt co., E N.Mex., near the Tex. line; inc. 1910. It is the trade and processing center of an agricultural area. There is food processing, printing and publishing, and the manufacture of machinery, furniture, building products, and feeds. Oil wells... Read more |
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Charles Portal 1st Viscount Portal
Portal, Charles, 1st Viscount Portal (1893–1971). Portal came from a Berkshire gentry family of Huguenot ancestry. After Winchester and Christ Church, Oxford, he joined the army at the outbreak of war in 1914 but in 1915 transferred to the Royal Flying Corps, and flew more than 900 sorties... Read more |
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portal
portal. 1. Entrance doorway or gateway of monumental character, especially if emphasized by a stately architectural treatment making it the principal architectural motif of a façade. 2. Lesser doorway to a gateway-tower. 3. Portico. 4. Arch over a gateway or doorway. 5. Structural frame... Read more |
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Sclerotherapy for Esophageal Varices
Sclerotherapy for esophageal varices Definition Sclerotherapy for esophageal varices, also called endoscopic sclerotherapy, is a treatment for esophageal bleeding that involves the use of an endoscope and the injection of a sclerosing solution into ... Read more |
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Lorenzo Ghiberti
Lorenzo Ghiberti , c.1378-1455, Florentine sculptor. He received his early training in the workshop of Bartoluccio. In 1401 he entered the competition for a bronze portal for the baptistery in Florence. He won the contest against his closest rival, Brunelleschi . Their trial panels, depicting The... Read more |
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facade
facade , exterior face or wall of a building. The term implies ordered placement of its openings and other features and thus seems inapplicable to a wall without design. Any freestanding structure may have four or more facades, designated by their orientation (e.g., north facade); a building flanked... Read more |
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Jacopo della Quercia
Jacopo della Quercia , c.1374-1438, Italian sculptor. His work shows the transition from medieval to Renaissance art. He is especially noted for his imposing allegorical figures for the Gaia Fountain in Siena. About 1425 he began to decorate the main portal of San Petronio, Bologna, with scenes from... Read more |
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hepatocyte
hepatocyte A specialized epithelial cell that is the most abundant type of cell in the liver. Hepatocytes are arranged around a central vein in units called lobules, in close association with branches of the hepatic portal vein, hepatic artery, and bile canaliculi. They are involved with the various... Read more |
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