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UPLC chromatogram of SMI and mixed reference at 210 nm: (a) samples of SMI (S1); (b) mixed reference (10, ginsenoside Rg1; 11, ginsenoside Re; 15, ginsenoside Rf; 19, ginsenoside Rb1; 20, ginsenoside Rg2; 22, ginsenoside Rb2; 23, ginsenoside Rb3; 24, schisandrol A; 25, ginsenoside Rd; 37, Ophiopogon D; and 39, schisandrin A).
