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. 2011 May 27;6(5):e20112. doi: 10.1371/journal.pone.0020112

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Dabrunz et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) 24 h, before 1^st molting; (B) 25 h, about 1 h after 1^st molting with arrow indicating renewed particle adhesions at filtration apparatus and the lower ventral gap; (C) 48 h; (D) 72 h; (E) 96 h; (F) ESEM-EDX picture of nTiO₂ particle agglomerates colored in red on spine of D. magna following 48 h of exposure to, nTiO₂ particles at 2 mg/L.