Key result
Cold-acclimated rats demonstrated more abundant adrenergic innervation of small arteries and arterioles, as well as more visible fine fibers between fat cells in brown adipose tissue.
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Cold acclimation in rats increases the demonstrable adrenergic innervation of small arteries, arterioles, and fat cells in brown adipose tissue.
The adrenergic nerve fibers of brown adipose tissue of warm- and cold-acclimated rats were visualized using the fluorescence histochemical technique. Small arteries and arterioles evidenced by their rich adrenergic innervation appeared more abundant in tissue from cold-acclimated animals. Lengths of fine fibers between the fat cells were demonstrable in the brown fat tissue from cold-acclimated rats because of their abundant, strongly fluorescent varicosities whereas such portions of fine fibers were only occasionally seen in the tissue of warm-acclimated rats.
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Cottle et al. (1970) studied Cold acclimation. Cold acclimation vs. Warm acclimation was evaluated on Visualization of adrenergic nerve fibers in brown adipose tissue. Cold-acclimated rats demonstrated more abundant adrenergic innervation of small arteries and arterioles, as well as more visible fine fibers between fat cells in brown adipose tissue.
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