Effects of AdGFP on ear blood flow and vasodilation. (A) AdGFP (1 × 10⁸ MOI/ear), AdNull (1 × 10⁸ MOI/ear), or control (PBS) was injected in the pinna of the mouse's ear. After 3 days following injection, blood flow was measured using a laser-Doppler. The columns are the means, and the bars are the SD (n = 3); *P < .05 compared with control or AdNull. As compared to the AdNull injected mice (B), 3 days after AdGFP injection (C) there was an increase in the number of grossly vasodilated vessels.