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  Indian J Med Microbiol
 

Figure 4: A principal component analysis on the phenolic compounds studied and total sesquiterpene lactones in Arnica collection: (a) Principal component analysis score plot; (b) Principal component analysis loading plot

Figure 4: A principal component analysis on the phenolic compounds studied and total sesquiterpene lactones in <i>Arnica</i> collection: (a) Principal component analysis score plot; (b) Principal component analysis loading plot