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. 2015 May 18;48(3):132–141. doi: 10.3961/jpmph.15.006

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Copyright © 2015 The Korean Society for Preventive Medicine

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure. 2. — Gross alterations in the lungs with exposure to cerium oxide (CeO₂) nanoparticles include increased weight, black discoloration of the lungs, and the appearance of white nodules on the surface. The white nodules appeared to increase with longer exposure, and the white nodules appeared to coalesce to form bigger nodules at day 90. (A) Saline control lungs day 1, (B) CeO₂ exposed lungs (7.0 mg/kg) day 28, (C) CeO₂ exposed lungs (7.0 mg/kg) day 56, and (D) CeO₂ exposed lungs (7.0 mg/kg) day 90.