Fig. 3.

Data describing the dilator reactivity of ex vivo first order skeletal muscle (gracilis) resistance arterioles from LZR and OZR at 10 wk of age. Data are presented for the dilator responses of arterioles in response to increasing concentrations of ACh (A), arachidonic acid (B), sodium nitroprusside (C), and reduced oxygen tension (D). Data are presented as means ± SE; n = vessels from 8–10 animals in for OZR and n = vessels from 6–8 animals for LZR. *P < 0.05 in the upper bound (A–C) or magnitude of the response (D) vs. LZR; †P < 0.05 in the upper bound (A–C) or magnitude of the response (D) vs. OZR.