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Effect of capsaicin on endothelin-1 induced neurogenic vasodilation in the human skin microcirculation in vivo: Subjects were treated locally with capsaicin ointment. Treatment with capsaicin (0.25% ointment over 12 h; □) markedly reduced endothelin-1 (10−12 mol; •) induced neurogenic vasodilation. ***P<0.001 vs saline, #P<0.02vs control
