Results 231 to 240 of about 1,007,590 (275)
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Neuroendocrine Projections to the Median Eminence
1986Advertisements in the Sunday newspaper boast of how to command your pituitary gland with a simple tablet, but in fact, regulation of anterior pituitary function is the result of complex interactions of cells in the pituitary with hormones from the gland itself, from peripheral target tissues, and from neurons in the central nervous system.
G. E. Hoffman +3 more
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Ultrastructure of ependymal cells of the shark median eminence
The Anatomical Record, 1974AbstractThe ultrastructure of ependymal cells of the median eminence in young Pacific blacktip reef sharks is described. Three major cell types have been observed. The first type is an irregularly‐shaped, electron dense cell with many long microvilli and occasional cilia projecting into the ventricle.
L C, Saland, A P, Evan, L S, Demski
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Autoradiography of GABA in the rat hypothalamic median eminence
Brain Research, 1980Light microscopy autoradiographs of the rat hypothalamic median eminence were prepared after injection of high specific activity tritiated GABA and GABA structural analogs. Following intracardiac injection of labeled GABA with short (15 min) survival time, a dense accumulation of silver grains was observed over the external layer of the median eminence.
M, Tappaz +3 more
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Uptake and Transport Activity of the Median Eminence of the Hypothalamus
1976Publisher Summary This chapter discusses the uptake and transport activity of the median eminence of the hypothalamus. Two releasing hormones, thyrotropin-releasing hormone (TRH) and luteinizing hormone releasing hormone (LHRH), have been detected in the cerebrospinal fluid (CSF) of the third ventricle of the rat.
K M, Knigge +8 more
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Cell and Tissue Research, 1975
A combined scanning/transmission electron microscopic (SEM/TEM) technique was used to analyze the third cerebral ventricle and underlying tissue of the median eminence of 6 mature rhesus monkeys. The same sample of the ventricular wall was subjected to both SEM and TEM. This technique demonstrates two basic subpopulations of supraependymal cells on the
D E, Scott +4 more
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A combined scanning/transmission electron microscopic (SEM/TEM) technique was used to analyze the third cerebral ventricle and underlying tissue of the median eminence of 6 mature rhesus monkeys. The same sample of the ventricular wall was subjected to both SEM and TEM. This technique demonstrates two basic subpopulations of supraependymal cells on the
D E, Scott +4 more
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Functional Electron Microscopy of the Hypothalamic Median Eminence
1970Publisher Summary The median eminence contains distal portions of several types of axons characterized by size and profile of the granules or vesicles therein. Four types of axons are clearly discernible throughout the vertebrate series (1) axons containing large granules (about 1500 A) and synaptic vesicles, (2) axons containing intermediate ...
H, Kobayashi, T, Matsui, S, Ishii
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Immunohistochemical localization of enkephalins in median eminence and adenohypophysis
Brain Research, 1979Immunohistochemical staining for methionine-enkephalin and leucine-enkephalin were used to reveal an enkephalins-like substance in the median eminence and adenohypophysis of guinea pig and rat. Nerve endings were stained for enkephalins in the external layer of the median eminence.
G, Tramu, J, Leonardelli
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Response of tanycytes to aging in the median eminence of the rat
American Journal of Anatomy, 1982AbstractAge‐related changes in tanycytes of the median eminence were observed at both the light and electron microscopic level in male and female rats at ages 4 weeks to 14 months. The most obvious changes involved a marked progressive increase in number and size of droplets identified histochemically as neutral lipid and the development of complex ...
J R, Brawer, R J, Walsh
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The median eminence of the bowfin, Amia calva L
General and Comparative Endocrinology, 1970Abstract The coexistence of an extensive, elaborate median eminence and limited areas of primitively developed neurohypophyseal contact within the pars distalis are described in the holostean fish Amia calva as observed by light and electron microscopy. Axonal bulbs with 890 A diameter, monaminergic-type dense-cored vesicles are concentrated on the
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Ultrastructural evidence for exocytosis in the median eminence of the rat
Zeitschrift f�r Zellforschung und mikroskopische Anatomie, 1972Exocytosis has been demonstrated by electron microscopy in the external zone of the median eminence of the rat. Exocytotic profiles have been observed in nerve fibres characterized by the presence of granular vesicles with median diameters of 90–103 nm and agranular vesicles of about 50 nm.
R, Stoeckart, H G, Jansen, A J, Kreike
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