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. 2010 Mar 25;8:7. doi: 10.1186/1477-3155-8-7

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Copyright ©2010 Prasad et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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ELISA BrdU histograms. ELISA BrdU assay at 24, 48 and 72 hours illustrating (by intensity of absorption at 450 nm) the amount of cell proliferation following co-incubation with varying concentrations 10^-7-(-9)M of the gel and non-gel QDs. From left to right, controls [positive, negative, background] are also shown. §denotes examples of statistical significance due to effect of gelatine, * denotes examples of statistical significance due to effect of concentration using a one- way ANOVA (p < 0.05) by Tukey's mean comparison.