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Figure 2: (a) Histopathologic examination showing subepidermal blisters with dermal inflammatory cell infiltrate (H and E, ×20); (b) direct immunofluorescence of perilesional skin showing continuous linear deposits of immunoglobulin A at the basement membrane zone (×40); (c) the lesions of the extensor forearm skin after suberythematogenic photoprovocation with ultraviolet B (UVB) radiation for 4 days; (d) direct immunofluorescence fi ndings of the lesions induced by UVB radiation (×40)

Figure 2: (a) Histopathologic examination showing subepidermal blisters with dermal inflammatory cell infiltrate (H and E, ×20); (b) direct immunofluorescence of perilesional skin showing continuous linear deposits of immunoglobulin A at the basement membrane zone (×40); (c) the lesions of the extensor forearm skin after suberythematogenic photoprovocation with ultraviolet B (UVB) radiation for 4 days; (d) direct immunofluorescence fi ndings of the lesions induced by UVB radiation (×40)