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Background Several lines of evidences support a major role for Th1 cells in psoriasis. Treatment of psoriasis with cyclosporine, methotrexate and psoralen plus ultraviolet A (PUVA) is associated with clinical improvement and decrease in epidermal hyperplasia. Osteopontin (OPN) exerts a T‐helper type 1 (Th1) cytokine function, regulating inflammatory cell accumulation and function.
Objective To detect...