Figure 6. Effects of tangeretin on histopathological changes in lung tissues following ovalbumin (OVA) challenge. Severe cell infiltration was observed after OVA challenge, which was reduced on tangeretin treatment. A: Control; B: OVA; C: OVA + tangeretin (50 mg); D: OVA + DEX (dexamethasone). Representative plates were obtained at 400× magnification.