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Comparative Ultrastructure of the Acinar Cell and Secretory Granules of Parotid Salivary Gland in the Lesser White-toothed Shrew, Crocidura suaveolens and the Big White-toothed Shrew, C. lasiura  

Jeong, Soon-Jeong (Department of Oral Histology, College of Dentistry, Chosun University)
Jeong, Moon-Jin (Department of Oral Histology, College of Dentistry, Chosun University)
Publication Information
Applied Microscopy / v.35, no.4, 2005 , pp. 91-97 More about this Journal
Abstract
The acinar cells and secretory granules of the parotid salivary gland were examined in the lesser white toothed shrew, Crocidura suaveolens and the big white-toothed shrew, C. lasiura. The parotid gland of both species were a serous gland having only one kind of serous acinar cells, and had conventional arrangement of acini and intercalated, granular and striated ducts. In case of C. suaveolens, serous acinar cells had well developed rER, prominent Golgi complex, several large mitochondria and abundant moderate dense secretory granules with various stages of the maturing or fusing process. Immature acinar secretory granules were only or mainly filled with fine strong dense specks and had an indistinct limiting membrane, and mature granules were filled with homogeneous pale large round center and had fine strong dense specks at the periphery of the homogeneous pale center and a distinct limiting membrane. In case of C. lasiula, serous acinar cells had well developed rER, prominent Golgi complex, several large mitochondria and abundant dense secretory granules with maturing or fusing process. Immature acinar secretory granules were only filled with pale rough specks and had an indistinct limiting membrane, and mature granules were only filled with rough dense specks and had a distinct limiting membrane. Eventually The acinar secretory granules of C. suaveolens were seen moderate at the light and ultrastuctural level, those of C. lasiura were strong dense at the light microscopic level and dense at the ultrastructural level.
Keywords
Crocidura lasiura; Crocidura suaveolens; Parotid salivary gland; Serous acinar granule; Ultrastructure;
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