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. 2019 Aug 16;12:196. doi: 10.1186/s13068-019-1528-2

Fig. 4.

Fig. 4

Detection of intracellular Mg and Fe ion concentrations in A. oxidans KQ11 using ICP-AES after exposure to different concentrations of Mg–Fe-LDH NPs. Asterisks (*) represent statistically significant (p < 0.05) differences