Fig. 2

Effects of PJH on CS/LPS-induced histological changes in lung tissue. Lung tissues were fixed, sectioned at 4-μm thickness, stained with H&E, and examined under a microscope. A CON: control; B CS + LPS: CS/LPS-exposed; C RO: administration of roflumilast 10 mg/kg prior to CS/LPS exposure; D PJH 100: administration of PJH 100 mg/kg prior to CS/LPS exposure; E PJH 200: administration of PJH 200 mg/kg prior to CS/LPS exposure