Figure 4: 4: Effects of UVA irradiation on the gp91phox and neutrophil expressions in the dorsal of skin. Six hours after the final UVA irradiation of the dorsal skin in the C57BL/6j mice, the mice were sacrificed, and dorsal skin specimens were frozen, cut into thin sections and stained according to routine histological methods. The data show one typical experiment from 10 animals. Scale bar=100 μm.