Publication: Circadian and seasonal variations in pineal gland intercellular canaliculi in the white rat
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Date
1991
Authors
Martínez Soriano, F. ; Cimas García, C. ; Ruíz Torner, A.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Seventy Wistar rats are used to study the
changes in pineal intercellular canaliculi over a 21-hour
period and for two different photoperiods (pre-autumn,
first week of September, and winter, first week of
February). The study considers these changes at pineal
body, cortical and medullar level separately, and
compares the values obtained. The results show
variations in canalicular surface at different point times
(10:00, 14:00,18:00) and for both photoperiods.
The variations are found to favour the cortical layer,
and are also observed between nocturna1 and diurnal
hours. Canalicular surface to greater during the diurnal
hours of both photoperiods.
Interesting histological findings are described that
suggest an important function of the intercellular
canaliculi in pineal gland metabolic exchange.
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