Chemical constituents of Salvia plebaia Chemical constituents of Dracocephalum heterophyllum and antibacterial activity Chemical constituents of Paederia scandens Response of Protective Enzymes in Calli of Barnyard Grass to Oxidizing Stress Induced by α-terthienyl Study on Community characteristics and α Diversity under Different Grazing Intensity on Leymus chinensis(Trin.)Tzvel. Meadow Steppe of Hulunbeier Effect of Danshen Dropping Pills on hepatic fibrosis in rats induced by carbon tetrachlotide and its mechanism