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. 2020 Jan 15;20:9. doi: 10.1186/s12906-019-2789-9

Fig. 1.

Fig. 1

UPLC-DAD-MS analysis of metabolites in aqueous-ethanolic and butanolic extracts of H. procumbens (top two panels, total elution profile); bottom two panels, portion of the gradient (min. 1–15) in which iridoid and phenylethanoid/phenylpropanoid anti-inflammatory metabolites elute. Marked peaks were identified by comparison with commercial analytical standards