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The Harderian gland of the rodent Octodon degus: a structural and ultrastructural study.

Authors
  • Antolín-González, I
  • Uría, H
  • Tolivia, D
  • Menéndez-Peláez, A
Type
Published Article
Journal
Tissue and Cell
Publisher
Elsevier
Publication Date
Jan 01, 1993
Volume
25
Issue
1
Pages
129–139
Identifiers
PMID: 8470091
Source
Medline
License
Unknown

Abstract

Harderian glands from male and female Octodon degus were examined by light and transmission electron microscopy. Two types of secretory units, designated as type I and type II, were observed. Type I secretory units comprise three types of epithelial cells: Cells packed with numerous lipid droplets (Type a), cells with few lipid droplets (Type b), and cells with numerous mitochondria and a very well developed Golgi complex (Type c). Type II secretory units were found exclusively in female Octodon degus and comprised a type of secretory cells which contained numerous basophilic granules in their apical cytoplasm. In addition, in female Octodon degus, clusters of lymphocyte-like cells and plasmatic cells were also observed. The vascularization of the gland appeared very well developed. The most unique feature of the blood supply was the existence of large sinusoidal vessels extremely variable in shape. In the medullar region, the sinsoidal wall adapts its contour to that of the tubuloalveolar surface. Unmyelinated and myelinated nerve fibers were found in the connective stroma of the gland.

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