Fig. 4

Lung sections of mice that were subjected to chronic OVA challenge with or without S-NACH administration were subjected to trichrome staining (a) Bar = 50 μm. Equal weight of lung tissue from the two groups was processed for hydroxyproline assessment as described in the “Methods” section. b The hydroxyproline contents were measured using a commercial assay kit. Data are mean ± SD of values from at least 6 mice per group. *Difference from OVA-challenged mice, p < 0.05