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Ultrastructure of the Pineal Gland in the Adult Dog
Author(s) -
Calvo J.,
Boya J.,
GarciaMauriño E.
Publication year - 1988
Publication title -
journal of pineal research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.881
H-Index - 131
eISSN - 1600-079X
pISSN - 0742-3098
DOI - 10.1111/j.1600-079x.1988.tb00790.x
Subject(s) - pinealocyte , pineal gland , ultrastructure , golgi apparatus , connective tissue , perivascular space , parenchyma , centriole , biology , anatomy , vesicle , cilium , electron microscope , neuroglia , pathology , melatonin , microbiology and biotechnology , central nervous system , endocrinology , endoplasmic reticulum , medicine , genetics , botany , physics , membrane , optics
The adult dog pineal gland was studied with the electron microscope. Pineal connective tissue spaces were poorly developed and showed capillaries with nonfenestrated endothelial cells. Two cell types, pinealocytes and astrocytes, could be identified in pineal parenchyma. Dog pinealocytes showed microtubules, centrioles, occasional cilia, and well‐developed Golgi complexes. These cells showed thin processes with bulbous endings packed with vesicles. Astrocytes were characterized by the presence of numerous filaments. Their processes finished forming a glial layer bordering connective tissue spaces. The presence of myelinated and unmyelinated nerve fibers was also described.
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