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. 2017 Aug 2;12:478. doi: 10.1186/s11671-017-2242-2

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© The Author(s). 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 4 — Histology of livers in mice treated with nano-TiO₂ exposed to nano-TiO₂. Mice were treated with nano-TiO₂ suspension or saline solution as indicated through intraperitoneal injection once a day for 14 days. a Control. b TiO₂, 5 mg/kg. c TiO₂, 50 mg/kg. d TiO₂, 100 mg/kg. e TiO₂, 150 mg/kg. f TiO₂, 200 mg/kg