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chromaffin cell

   Also found in: Medical, Wikipedia 0.01 sec.
chromaffin cell [krō′ma·fən ‚sel]
(histology)
Any cell of the suprarenal organs in lower vertebrates, of the adrenal medulla in mammals, of the paraganglia, or of the carotid bodies that stains with chromium salts.


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Certain reports contend that this chromaffin cell therapy approach would have had problems clinically [26] with or without the clinically tested microencapsulation [27] that surrounded the grafts to prevent immune rejection [28].
In the second stage, beginning 48 hours after the injury, the adrenals are greatly enlarged but regain their lipoid granules, while the medullary chromaffin cells show vacuolization; the edema begins to disappear, numerous basophiles appear in the pituitary; the thyroid shows a tendency towards hyperplasia (more marked in the guinea pig); general body growth ceases, and the gonads become atrophic; in lactating animals, milk secretion stops.
A primary response is the activation of brain centers, which eventually results in the release of cortisol from the steroid-producing cells and of catecholamines from the head kidney chromaffin cells.
 
 
 
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