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  Indian J Med Microbiol
 

Figure 2: High-performance liquid chromatography chromatograms of chemical markers 1-5. 1: (+)-pseudoephedrine; 2: (-)ephedrine; 3: aloe-emodin; 4: chrysophanol; 5: shikonin

Figure 2: High-performance liquid chromatography chromatograms of chemical markers 1-5. 1: (+)-pseudoephedrine; 2: (-)ephedrine; 3: aloe-emodin; 4: chrysophanol; 5: shikonin