Fig. 5From: Role of nitrous acid in the association between nitrogen dioxide and asthma symptoms: effect of nitrous acid exposure on specific airway resistance in guinea pigsChange in PEF for each group over time after exposure to HONO. Data are presented as the mean ± SD for Experiments 1 and 2. Dunnett's multiple comparison was applied for comparison with the control following ANOVA PEFs in Groups H and M were not significantly different from PEF in Group CBack to article page