(A–C and E–H) Quantitation of specific T lymphocyte populations (A–C), pustules (E), mast cells (F), eosinophils (G), and macrophages (H) per mm epidermis or mm2 dermis. Data in all histograms are means ± SEM of at least three mice per genotype. (D, I, J) Skin sections of mice treated three times with acetone (I) or TPA (D and J) and labelled for CD11b (green, D), Ly6G (red, D), CD3 (red I, green J), γδTCR (green I) or CD4 (red, J) with DAPI nuclear counterstain (blue). White asterisk: neutrophil pustule. Insets in I and J are higher magnification views of boxed areas. Scale bars: 100 μm.