ADRENERGIC FIBERS IN BROWN FAT OF COLD-ACCLIMATED RATS
1 Department of Pharmacology and Department of Physiology, University of Alberta, Edmonton, Alberta, Canada
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. Submitted on July 20, 1969
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