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The chromatograms of schisandrin (Sch) A and SchB, two major active components of Schisandra chinensis extract under high-performance liquid chromatography analysis. The column was eluted using H2O:methanol (v/v, 30:70) at a flow rate of 1.0 mL/minute for 35 minutes. The absorbance at 254 nm was monitored.
