{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T20:02:43Z","timestamp":1760644963353},"reference-count":33,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2005,1,26]],"date-time":"2005-01-26T00:00:00Z","timestamp":1106697600000},"content-version":"vor","delay-in-days":3862,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Anat. Rec."],"published-print":{"date-parts":[[1994,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Background<\/jats:italic>: The microvascular pattern of the duodenal papilla is unknown. Since the duodenal papilla is located in the transition zone between the stomach and duodenum, and because it regulates bile transfer into the duodenum, a particular microangioarchitecture can be expected. Therefore, we examined the microvasculature of the papilla using guinea pigs as a model.<\/jats:p><jats:p><jats:italic>Methods<\/jats:italic>: The microvascularization of the duodenal papilla and common bile duct was studied in 26 adult guinea pigs (<jats:italic>Cavia porcellus<\/jats:italic>), using scanning electron microscopy of microvascular corrosion casts and critical point dried specimens, and light microscopy of tissue sections.<\/jats:p><jats:p><jats:italic>Results<\/jats:italic>: The duodenal papilla is located in the cranial portion of the duodenum, approximately 5 mm beyond the pyloric valve. At the most luminal aspect of the cast papilla, ring\u2010shaped capillaries, resembling those of the cast gastric mucosa, are present. Deeper parts of the papilla are provided with villi. Subepithelial capillaries of the papilla are 15 \u03bcm thick in average. These capillaries have a dual blood supply either via the straight long arterioles arising from the submucosa or by the pericryptal capillaries. The common bile duct comprises numerous mucoid glands with their pits surrounded by ring\u2010shaped capillaries in corresponding casts.<\/jats:p><jats:p><jats:italic>Conclusions<\/jats:italic>: The special arrangement of different capillary patterns, together with their luminal size and the dual blood supply, favor their protective role from the gastric chyme. \u00a9 1994 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/ar.1092390306","type":"journal-article","created":{"date-parts":[[2005,2,26]],"date-time":"2005-02-26T19:33:29Z","timestamp":1109446409000},"page":"280-286","source":"Crossref","is-referenced-by-count":7,"title":["Microangioarchitecture of the guinea pig common bile duct and duodenal papilla: A scanning electron and light microscopic study"],"prefix":"10.1002","volume":"239","author":[{"given":"S.","family":"Aharinejad","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Lametschwandtner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"B\u00f6ck","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W.","family":"Firbas","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,1,26]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"89","article-title":"Microangioarchitecture of the guinea pig gallbladder and bile duct as studied by scanning electron microscopy of vascular corrosion casts","volume":"181","author":"Aharinejad S.","year":"1992","journal-title":"J. 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