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  • Title: Effect of chronic exercise on beta-endorphin receptor levels in rats.
    Author: Houghten RA, Pratt SM, Young EA, Brown H, Spann DR.
    Journal: NIDA Res Monogr; 1986; 75():505-8. PubMed ID: 2828998.
    Abstract:
    A radioreceptor assay using [3H]2-beta-endorphin (B-EP) was used to examine binding in the brains of rats that had been exercised on a treadmill for 5 months. The binding of [3H]2-beta-EP to brain homogenates gave an average Kd of 0.830 +/- 0.055 nM for the controls and 0.826 + 0.022 nM for the runners, and respective Bmax's of 166 +/- 20 pM and 159 +/- 27 pM.
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