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. 2020 Sep 11;15:6721–6734. doi: 10.2147/IJN.S250773

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© 2020 Li et al.

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(A) The change of EE for TL, LCL, LCTL after lyophilization with different cryoprotectants. (B) The change of EE for TL, LCL, LCTL after storage at 4°C for one month. Data are represented as the mean±SD from three independent experiments. **p < 0.01, ***p < 0.001.