K10/K14 (left) and K14 (high magnification, right) labeling of WT blistered skin treated with CaCl2 (middle and bottom) or PBS (top) at P2. Scale bar: 30 μm. Quantification of BrdU-positive cells per μm HF length (n=83 (PBS), 95 (1.8 mM CaCl2), and 97 (9.0 mM CaCl2) HFs from four mice). One-way ANOVA test, followed by Tukey's test. NS, no significance. Length of the major axis of keratinocytes in the regenerated epidermis (n=433 (PBS, L), 451 (1.8 mM CaCl2, L), and 425 (9.0 mM CaCl2, L) cells from four mice) and in the surrounding intact epidermis (basal cells; n=311 (PBS, NL), 279 (1.8 mM CaCl2, NL), 302 (9.0 mM CaCl2, NL) cells from four mice). NL: nonlesional area. L: lesional area. The data are shown as violin plots. ****p<0.0001, one-way ANOVA test, followed by Tukey's test. NS, no significance. 