Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
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Comparative Ultrastructure of Secretory Granules of the Submandibular Gland in the Korean Spider Shrew, Sorex caecutiens, the Lesser White-toothed Shrew, Crocidura suaveolens and the Big White-toothed Shrew, Crocidura lasiura

  • Jeong, Soon-Jeong (Department of Oral Histology and Developmental Biology, School of Dentistry, Chosun University) ;
  • Bae, Chun Sik (College of Veterinary Medicine, Animal Medical Institute, Chunnam National University) ;
  • Lee, Hye-Yon (Department of Oral Histology and Developmental Biology, School of Dentistry, Chosun University) ;
  • Choi, Baik-Dong (Department of Oral Histology and Developmental Biology, School of Dentistry, Chosun University) ;
  • Yoon, Myung-Hee (Division of Natural Sciences, College of Sciences, Kyungsung University) ;
  • Jeong, Moon-Jin (Department of Oral Histology and Developmental Biology, School of Dentistry, Chosun University)
  • Received : 2012.11.08
  • Accepted : 2012.11.30
  • Published : 2012.12.31
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Abstract

The ultrastructure of the secretory granules of the submandibular gland was examined in the Korean spider shrew, Sorex caecutiens, lesser white-toothed shrew, Crocidura suaveolens and big white-toothed shrew, C. lasiura. The mucous and serous acinar granules of S. caecutiens with a border of the lucid corona differed from those of C. suaveolens and C. lasiurar with a dense lateral border. The mucous acinar granules of C. lasiura with several bands producing a variety of patterns in the matrix were similar to those of C. suaveolens. The serous acinar granules of C. lasiura had a homogenous pale center surrounded by minute dense specks or had an unusual substructure showing a geometric pattern according to the inclusions in the pale matrix of the granules. This is the first report of an unusual substructure showing a geometric pattern of the serous acinar granules of C. lasiura. The myelin-like body was observed in the granular duct cell of the three species of shrew. The myelin-like body of S. caecutiens with layers of unit membranes was different from that of C. suaveolens and C. lasiura with paired membranes. Therefore, the layers composing of the paired membranes of the myelin-like body might be one of the characteristics of Crocidura.

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References

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