Ultrastructure of the submandibular gland in the rabbit

The American Journal of Anatomy
K Toyoshima, B Tandler

Abstract

The secretory endpieces of the rabbit submandibular gland are unusual in that they consist of seromucous acini (not demilunes) that empty into serous tubules that in turn drain into intercalated ducts. Seromucous granules consist of a moderately dense spherule in a fibrillogranular matrix. Serous granules contain a feltwork of filaments, which are liberated as a tangled skein during exocytosis. Peculiar granulated cells that have secretory granules of complex morphology are present at each end of the serous tubules. Intercalated ducts are, cytologically speaking, relatively simple, but the duct cells may contain a few oblong secretory granules. Striated ducts are typical in structure, although postfixation with ferrocyanide-reduced osmium reveals significant amounts of glycogen in the basal processes. Modified mitochondria are present in striated duct cells, but their frequency varies from rabbit to rabbit. Such mitochondria contain either an array of parallel, rigid cristae linked by intermembranous bridges, or a bundle of helical filaments within an expanded crista. Interspersed with the striated duct cells, especially near the duct origin, are some highly vacuolated cells with sparse mitochondria. Excretory ducts consisting ...Continue Reading

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Citations

Oct 23, 1997·Microscopy Research and Technique·J GilloteauxW S Hawkins
Sep 16, 1998·The Anatomical Record·B TandlerC J Phillips
Sep 1, 1993·Microscopy Research and Technique·B Tandler
Jan 1, 1994·Microscopy Research and Technique·E W Gresik
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Apr 14, 2006·The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology·Bernard TandlerCarleton J Phillips
Sep 1, 1993·Microscopy Research and Technique·B Tandler, C J Phillips
Sep 1, 1993·Microscopy Research and Technique·B Tandler
Dec 1, 1990·The American Journal of Anatomy·B TandlerC J Phillips
Jan 1, 1990·Ultrastructural Pathology·B Tandler, A Riva

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