Objective To explore the expression of thrombospondin-1( TSP-1) and epidermal growth factor receptor( EGFR)on airway mucus hypersecretion in rats. Methods Twenty male Wistar rats were divided into two groups: the endotoxin group and the control group respectively. The count of epithelial goblet cell,the expression of mucin in bronchial tissues were examined by HE staining and alcain blue-periodic and Schiff( AB-PAS) staining. The expression of TSP-1,EGFR and MUC5 AC in the lung of rats were measured by immu...