Overexpression of CaV1.2 exon 1b or 1c dilates pressurized cerebral arteries. A, representative traces illustrating myogenic tone at 60 mm Hg in control (pEGFP-N3 vector) arteries and in arteries overexpressing e1b-EGFP or e1c-EGFP. B, bar graph indicating effects of e1b-EGFP, e1c-EGFP, and control (pEGFP-N3 vector) overexpression on steady state myogenic tone at 60 mm Hg (n = 18–23). *, p < 0.05 compared with control; #, p < 0.05 compared with arteries overexpressing e1b-EGFP (p < 0.05).