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. 2014 Dec 4;9(1):656. doi: 10.1186/1556-276X-9-656

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Copyright © 2014 Urbas et al.; licensee Springer.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.

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Relative viability of fibroblast cell line L929 exposed to B-GO and B-GO-Fe₃O₄hybrid. The cell viability is presented as percentage of the mean value. Bars represent standard deviation, and the symbol asterisk indicates statistically significant difference (p < 0.05).