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. 2019 Jun 29;24(13):2410. doi: 10.3390/molecules24132410

Figure 2.

Figure 2

Full-scan product ion mass spectra of the [M + H]+ ions of protopine (a) and chelidonine (b) and the [M]+ ions of coptisine (c), sanguinarine (d), chelerythrine (e) in cell lysates after coincubation with Ch. majus for 30 min.