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Figure 1: (a) Multiple, tense bullae with erythema seen on the back. (b) Subepidermal blister with abundant lymphocytes and eosinophilic infiltrate in the underlying dermis (H and E, ×10). (c) Direct immunofluorescence showed linear deposition of immunoglobulin G and C3 along the basement membrane zone. (d) Salt-split skin substrate demonstrated an epidermal/roof pattern

Figure 1: (a) Multiple, tense bullae with erythema seen on the back. (b) Subepidermal blister with abundant lymphocytes and eosinophilic infiltrate in the underlying dermis (H and E, ×10). (c) Direct immunofluorescence showed linear deposition of immunoglobulin G and C3 along the basement membrane zone. (d) Salt-split skin substrate demonstrated an epidermal/roof pattern