Research Article
The Isosteroid Alkaloid Imperialine from Bulbs of Fritillaria cirrhosa Mitigates Pulmonary Functional and Structural Impairment and Suppresses Inflammatory Response in a COPD-Like Rat Model
Figure 2
The pulmonary function parameters of rats in different groups. The reported values are the means ± SEM. Significant differences compared to the control group are indicated by and . Significant difference compared to the COPD model group is indicated by .