Figure 1.

Study methods for establishing the model in mice with acute lung injury and the administration of medication. Bronchitis model was induced in mice by LPS suspension in normal saline (24 mg/kg) on days 0 to 2. The mice were administrated 2 µl/g LPS for 3 days. On the fourth day, different doses of trans-anethole and dexamethasone were orally administrated for 7 consecutive days. The model group was only given normal saline administration. The control group was not given anything. Following the completion of drug administration, the mice were subsequently sacrificed within 24 h post-treatment. LPS, liposaccharide.