Passive distensibility of resistance-sized mesenteric arteries from spontaneously hypertensive and Wistar Kyoto testosterone-manipulated males. Data are expressed as percentage distensibility (means ± SEM). (A) Passive distensibility was increased in spontaneously hypertensive castrate plus testosterone (SHR CAST + T) mesenteric arteries compared to SHR control (SHR CONT) (*
P < 0.01) and SHR CAST (*
P < 0.01). (B) Passive distensibility was increased in Wistar Kyoto (WKY) CAST mesenteric arteries compared to WKY CONT (*
P < 0.05) and WKY CAST + T (*
P < 0.05).