{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T00:13:03Z","timestamp":1773015183865,"version":"3.50.1"},"reference-count":29,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2013,2,13]],"date-time":"2013-02-13T00:00:00Z","timestamp":1360713600000},"content-version":"vor","delay-in-days":13314,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Morphology"],"published-print":{"date-parts":[[1976,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The fine structure of the retinal epithelium has been studied by electron microscopy in the opossum (<jats:italic>Didelphis virginiana<\/jats:italic>). The retinal epithelium, over most of the retina, is typical of that in other vertebrates and consists of a single layer of heavily pigmented, cuboidal cells. These cells display extensive basal (scleral) infoldings and numerous apical (vitreal) processes which enclose photoreceptor outer segments.<\/jats:p><jats:p>A semicircular area of the retinal epithelium in the superior fundus is further specialized as a tapetum lucidum. The reflecting material consists of a large quantity of lipoidal spheres scattered throughout the epithelial cells. Centrally in the tapetal area very few or no melanosomes are found, indicating a non\u2010occlusible tapetum. Peripherally in the tapetum, the epithelial cells contain both reflecting material and melanosomes. As in the non\u2010tapetal area, the epithelial cells of the tapetum display large amounts of smooth endoplasmic reticulum and numerous mitochondria.<\/jats:p><jats:p>Bruch's membrane everywhere displays the usual pentalaminate structure described for most vertebrates. The choriocapillaris is also typical, in that numerous fenestrations are present in the endothelium bordering Bruch's membrane.<\/jats:p>","DOI":"10.1002\/jmor.1051500110","type":"journal-article","created":{"date-parts":[[2013,2,13]],"date-time":"2013-02-13T12:27:57Z","timestamp":1360758477000},"page":"213-225","source":"Crossref","is-referenced-by-count":21,"title":["Fine structure of the retinal epithelium and tapetum lucidum of the opossum (<i>didelphis virginiana<\/i>)"],"prefix":"10.1002","volume":"150","author":[{"given":"C. R.","family":"Braekevelt","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2013,2,13]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.1974.0032"},{"key":"e_1_2_1_3_1","first-page":"9a","article-title":"The ultrastructure of a retinal tapetum lucidum in the eye of a teleost","volume":"47","author":"Arnott H. 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Anat."},{"key":"e_1_2_1_18_1","first-page":"1","volume-title":"The Retina","author":"Moyer E. H.","year":"1969"},{"key":"e_1_2_1_19_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0025315400054928"},{"key":"e_1_2_1_20_1","first-page":"5","article-title":"The tapetum lucidum of the sturgeon","volume":"14","author":"Nicol J. A. C.","year":"1969","journal-title":"Contr. Mar. Sci. Univ. Texas"},{"key":"e_1_2_1_21_1","doi-asserted-by":"publisher","DOI":"10.1139\/z73-012"},{"key":"e_1_2_1_22_1","first-page":"76","article-title":"Electron microscopic observations of the retinal pigment epithelium of vertebrate animals","volume":"6","author":"Okuda K.","year":"1962","journal-title":"Jap. J. 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