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  Indian J Med Microbiol
 

Figure 1: The HPLC chromatograms of Zhi Zhu Wan under different column conditions. (a) VP-ODS column (4.6 mm × 150 mm, 5 μm); (b) Kromasil C18 column (4.6 mm × 200 mm, 5 μm); (c) Waters Symmetry C18 column

Figure 1: The HPLC chromatograms of Zhi Zhu Wan under different column conditions. (a) VP-ODS column (4.6 mm × 150 mm, 5 μm); (b) Kromasil C<sub>18</sub> column (4.6 mm × 200 mm, 5 μm); (c) Waters Symmetry C<sub>18</sub> column