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. 2018 Aug 14;13:41. doi: 10.1186/s13020-018-0198-5

Fig. 1.

Fig. 1

Changes of Chao 1 (A) and Shannon indices (B) for the 16S rRNA gene sequences from samples of P. notoginseng parts. The value of each bar represents the mean ± SD of n = 3. Different letters indicated significant difference at the 0.05 level