Circadian variation of serum testosterone in the adult male rat with a late morning acrophase |
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| Authors: | M J Wilson Dr J M McMillin U S Seal K Ahmed |
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| Institution: | (1) Toxicology Research Laboratory, Veterans Administration Hospital, 54th Street and 48th Avenue South, Minneapolis, 55417, Minnesota, USA;(2) Department of Laboratory Medicine and Pathology, University of Minnesota, 55455, Minneapolis, USA;(3) VA Hospital, Bldg. 49, Rm. 207, 55417 Minneapolis, Minn., USA |
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| Abstract: | Summary Serum testosterone concentrations were measured in adult male Sprague-Dawley rats. A significant circadian testosterone rhythm (p<0.01) was found with peak values at 10.00 and 13.00 h.Supported in part by NIH, NCI Grant No. CA 15062 and NIH, NIAMDD Grant No. 5 RO1 AM11376.The authors would like to acknowledge the excellent technical assistance of Ms.Kris Strom. |
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