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. 2021 Nov 1;12:761084. doi: 10.3389/fmicb.2021.761084

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Copyright © 2021 Lu, Zhang, Khan, Li and Wan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Cytotoxic potential in terms of cell viability percentage against MCF-7 carcinoma cells treated with V. betonicifolia leaves extract, CH-MnO₂ NPs, and VBLE-MnO₂ NPs. Linear plot and regression coefficient between the cell viability % of the MCF-7 carcinoma cells with different concentrations of (B) V. betonicifolia leaves extract, (C) CH-MnO₂ NPs, and (D) VBLE-MnO₂ NPs.