Fig. 1.

Log dose-response effects of testosterone (TES) infusion on mean arterial blood pressure (MAP) in conscious, unrestrained, chronically catheterized, ganglion-blocked male Sprague-Dawley rats [0.375–6.00 μmol·kg⁻¹·min⁻¹ iv (0.15 ml·kg⁻¹·min⁻¹); n = 8 rats]. Vehicle-control rats (VEHICLE) received identical volumes of the vehicle (10% EtOH in normal saline, 0.15 ml·kg⁻¹·min⁻¹; n = 5 rats). Data points are means ± SE. MAP differed significantly with dose of TES (P = 0.0009) but not in VEHICLE (P = 0.893). *0.0005 ≤ P ≤ 0.047 TES vs. VEHICLE MAP at each dose.