Study on index components and fingerprints of crude and processed Siegesbeckia Herbs Experimental study on anti-inflammatory and immuno-regulating effect of kirenol A study on quality standard for Herba Siegesbeckiae Determination of kirenol in Herba Siegesbeckiae Preparata by highperformance liquid chromatography Effect of kirenol on cytokines in serum and apoptosis proteins expression in synoviocytes of adjuvant arthritis rats