Effect of Wenshen decoction on the histopathology of the lung. Inflammation was evaluated in the lung by analyzing inflammatory cell infiltration after H&E staining. Magnification: 200×. Control, control group; IL-33, IL-33-treated group; PRE, prednisone acetate group; WSF, Wenshen decoction group; CO, prednisone and Wenshen decoction group.