Anti-inflammatory activity of Weichang’an Pill Effect of different compatibility of Daphnes Giraldii Cortex and Glycyrrhizae Radix et Rhizoma on adjuvant-induced arthritis in rats Effects of Natural Cow-bezoar,Cultured Cow-bezoar and Chicken Bile on Rat Paw Edema and PGE2 Content of Inflammatory Tissues of Rat