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. 2020 Jan 15;7(1):191139. doi: 10.1098/rsos.191139

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© 2020 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — The cytotoxicity of Zn_0.5Fe_2.5O₄/SiO₂ NPs to MEF (a) and human osteosarcoma MG-63 (b) cells was assessed by the CCK-8 assay. Cells without NPs were used as control groups. Concentration-dependent cytotoxic effects of NPs were evaluated after 24 and 48 h incubation. Results are represented as mean ± s.e.m. Note: **significant difference from control (p < 0.01); ***significant difference from control (p < 0.005).