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. 2014 Apr 22;15(4):6857–6879. doi: 10.3390/ijms15046857

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© 2014 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 9. — (a) UV-Vis absorption spectra of gelatin solution containing Ag NPs; (b) Appearance of gelatin solutions with different AgNO₃ concentration.