Mean wound-healing rates for Pax6
+/+ and Pax6
+/- corneal epithelial cultures. Wound healing is divided into an initial phase (0–2 hours, black bars), a post-initial phase (2–6 hours, dark grey) and a mean total over 0–6 hours (pale grey). The initial rate of wound healing in Pax6
+/- cells is significantly lower than that in wild-type (mean ± SEM, * p < 0.01).