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  Indian J Med Microbiol
 

Figure 1: Microscopic characteristics of root tubers of Polygoni Multiflori Radix (Heshouwu) (1) clusters of calcium oxalate; (2) starch granules; (3) cork cells; (4) brown contents; (5) vessel; (1a) clusters of calcium oxalate under the polarized light microscope at column width

Figure 1: Microscopic characteristics of root tubers of Polygoni Multiflori Radix (Heshouwu) (1) clusters of calcium oxalate; (2) starch granules; (3) cork cells; (4) brown contents; (5) vessel; (1a) clusters of calcium oxalate under the polarized light microscope at column width