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. 2006 Mar 31;3(1):48–66. doi: 10.3390/ijerph2006030007

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© 2006 by the authors; licensee MDPI, Basel, Switzerland

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 14: — Chicken wire model of carbonaceous spherule formed by overlapping (turbostratic) graphene fragments. (a) and (b) show two views of the spherule. (c) is a magnified view of (b).