Vegfr2-luc expression during wound healing. Punch wounds 8 mm in diameter were generated on the backs of female Vegfr2-luc mice (n = 12). The mice were injected intraperitoneally with luciferin and imaged for 5 minutes at selected time points. (A) The day 0 image was taken immediately after wounding, and subsequent images were taken on days 1, 4, 7, 10, 14, 17, and 21 after wounding. (B) Quantification of luciferase expression (photons/s) from the wound area with LivingImage software (Xenogen). Data are shown as mean ± SE.