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Título: Retinal pigment epithelial fine structure in the short-tailed stingray. Dasyatis brevicaudata
Fecha de publicación: 1994
Editorial: Murcia : F. Hernández
ISSN: 0213-3911
Materias relacionadas: CDU::6 - Ciencias aplicadas::61 - Medicina
Palabras clave: Retinal Pigment Epithelium (RPE)
Fine structure
Resumen: The retinal pigment epithelium (RPE), choriocapillaris and Bruch's membrane (complexus basalis) have been studied by light and electron microscopy in the short-tailed stingray (Dasyatis brevicaudata). The RPE consists of a single layer of cuboidal cells which display numerous basal (choroidal) infoldings as well as many apical (vitreal) processes which interdigitate with photoreceptor outer segments. The lateral cell borders are relatively smooth and joined by a series of tight junctions. Within these epithelial cells, smooth endoplasmic reticulum is the dominant organelle with only scattered profiles of rough endoplasmic reticulum. Polysosomes, mitochondria and phagosomes are abundant. Melanosomes are totally absent over the tapetum and are scarce in non-tapetal locations. The RPE nucleus is large, vesicular and centrally located. Rruch's membrane is a pentalaminate structure. The choriocapillaris is a single layer of large capillaries. The endothelium of these capillaries is typically thin but only minimally fenestrated.
Autor/es principal/es: Braekevelt, Charlie R.
Publicado en: Histology and histopathology
URI: http://hdl.handle.net/10201/18525
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 6
Derechos: info:eu-repo/semantics/openAccess
Aparece en las colecciones:Vol. 9, nº 3 (1994)

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