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Mass spectra of metabolites of ginsenoside Rk1 in zebrafish. (A) 23-de-2-methyl propenyl ginsenoside Rk2-12-O-sulfate, M1; (B) ginsenoside Rk2-12-O-glucuronate, M2 and M5; (C) 5″-dehydroxymethyl ginsenoside Rk1-12-O-glucuronate, M3 and M6; and (D) ginsenoside Rk1-12-O-glucuronate, M4.
