Fig. 3.

Effects of SAMC on murine airway mucins. Sections show staining with AB-PAS (400×) and immunohistochemical staining (400×) of MUC5AC. The airway surface mucins were shown as the blue staining for the AB-PAS positive and brown staining for MUC5AC. Study groups: C: control group, orally treated with the vehicle only; M: model group, LPS was instilled into the lungs of mice through a high-pressure syringe; L and H: orally treated with SAMC at 20 and 40 mg/kg after the LPS challenge, respectively; P: positive control, NAC dosed at 500 mg/kg. n = 5 per group.