(a, b) Shown are representative images of immunostaining in (a) Ovol1 SSKO and (b) Ovol1−/− mice. (a, b, d) Arrows point to neutrophils. (c) Design of neutrophil depletion experiments in d–f. IgG was used as a control. (d) Immunostaining on d3. (a, b) Bar = 50 μm and (d) Bar = 100 μm. (e) External appearance and (f) phenotypic score (n = 3) at the respective times. *P < 0.05. Error bars represent mean ± SEM. Ab, antibody; d, day; h, hour; IMQ, imiquimod; K, keratin; SSKO, skin epithelia–specific knockout.