Distribution of acetylcholine and catecholamines in fish gills and their potential roles in the hypoxic ventilatory response

CS Porteus, DL Brink, EH Coolidge, AY Fong… - Acta …, 2013 - Elsevier
Carotid body glomus cells in mammals contain a plethora of different neurochemicals.
Several hypotheses exist to explain their roles in oxygen-chemosensing. In the present
study we assessed the distribution of serotonin, acetylcholine and catecholamines in the
gills of trout (Oncorhynchus mykiss) and goldfish (Carassius auratus) using
immunohistochemistry, and an activity-dependent dye, Texas Red hydrazide (TXR). In fish
the putative oxygen sensing cells are neuroepithelial cells (NECs) and the focus in recent …
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