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. 2022 Jul 16;21:140. doi: 10.1186/s12934-022-01867-5

Fig. 3.

Fig. 3

Comparison of different carbon sources (a) and yeast extract (b) for the production of γ-PGA using B. subtilis 242. Error bars represent SD calculated from three independent determinations. **Indicate significant differences at p < 0.05