ARM390 was administered twice each week, once before lactic acid vehicle and once before 1.8% lactic acid, with at least 3 days between ARM390 doses. Abscissa: Dose ARM390 in mg/kg. Ordinate: Percent baseline number of stimulations per component, and for this group of four rats, the mean±SEM baseline number of stimulations per component was 276.5±33.9. Two-way ANOVA indicated a significant main effect of acid treatment [F(1,3)=18.6, p=0.023], but no significant effect of ARM390 [F(3,9)=1.7, p=0.23] and no significant interaction [F(3,9)=0.4, p=0.76]. All bars show mean±SEM.