Fig. 5From: Inhalation of nebulized Mycobacterium vaccae can protect against allergic bronchial asthma in mice by regulating the TGF-β/Smad signal transduction pathwayImmunohistochemistry results of pulmonary TGF-beta/Smad signaling pathway related protein expression (×400). A1–3 (Normal control group); B1–3 (Asthma control group); C1–3 (M. vaccae neb. group)Back to article page