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Investigating B1R selective agonist in ultraviolet-irradiated skin. (A) Pain ratings during iontophoresis, using visual analogue scale (VAS) at 20-second intervals. (B) Area under the curve (AUC) of pain ratings. Saline vs bradykinin (BK) (P = 0.04), Saline vs des-Arg9-BK (P = 0.004), BK vs des-Arg9-BK (P = 0.014), one-way analysis of variance + Bonferroni post hoc analysis n = 10.
