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. 2008 Aug 28;8(8):5153–5170. doi: 10.3390/s8085153

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© 2008 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

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

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Figure 2. — Test organisms used for aquatic risk assessment of chemicals and now increasingly used in nanoecotoxicology: algae Pseudokirchneriella subcapitata cells under phase-contrast (a) and fluorescence (b) microscope; nanoCuO accumulation visible in the gut of crustaceans Daphnia magna (c) and Thamnocephalus platyurus (d) after exposure to nano CuO; protozoan Tetrahymena thermophila before (e) and after (f) exposure to nano CuO; naturally luminescent bacteria Vibrio fischeri (g) - growth of bacteria on agar medium after pre-incubation for 8 h in the suspensions of nano CuO and bulk CuO. Photo is taken in dark.