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. 2021 Mar 23;11:6604. doi: 10.1038/s41598-021-86119-z

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© The Author(s) 2021, corrected publication 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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MTT results of the rGO/MWCNT/CoNi₂S₄, rGO/MWCNT/CoNi₂S₄/H₂TMP, rGO/MWCNT/CoNi₂S₄/H₂TMP + CoNi₂S₄ (a) and rGO/MWCNT/CoNi₂S₄/H₂TMP + CoNi₂S₄ (b) on the (a) HEK-293, (b) HeLa, (c) HepG2 and (d) PC12 cell lines after treatment time of 48 h; and rGO/MWCNT/CoNi₂S₄, rGO/MWCNT/CoNi₂S₄/H₂TMP, rGO/MWCNT/CoNi₂S₄/H₂TMP + CoNi₂S₄ (a) and rGO/MWCNT/CoNi₂S₄/H₂TMP + CoNi₂S₄ (b) on the (e) HEK-293, (f) HeLa, (g) HepG2 and (h) PC12 cell lines after treatment time of 24 h; (a) represents for 10 mg mL⁻¹ and (b) 20 mg mL⁻¹ concentrations of the excess CoNi₂S₄. *p value < 0.05 and **p value < 0.01.