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. 2014 Oct-Dec;10(40):541–546. doi: 10.4103/0973-1296.141806

Figure 3.

Figure 3

Base peak chromatograms of high-performance liquid chromatography/diode array detection-electrospray ionization-mass spectrometry analysis of raw Fructus Arctii (a) and processed Fructus Arctii (b) in the negative ion mode