Effect of Huchang Qingfei concentrated pellets on E-cadherin expression in lung tissue of mice infected with Mycoplasma pneumoniae Effect of l-tetrahydropalmatine on expression of adhesion molecules induced by lipopolysaccharides in human umbilical vein endothelium cell Effect of Huoxue injection on oxidized low-density lipoprotein induced activation of human umbilical vein endothelial cells