Fig. 2From: Comparison of the chemical profiles and inflammatory mediator-inhibitory effects of three Siegesbeckia herbs used as Herba Siegesbeckiae (Xixiancao)Chemometric analyses of common peaks’ intensities of samples 1–14. a Results of hierarchical clustering analysis. b Results of principal component analysis. The green, blue and red balls represent SP, SO and SG, respectivelyBack to article page