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. 2008 Sep 15;8(9):5637–5648. doi: 10.3390/s8095637

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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 Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 1. — XPS survey spectra of reference (black) and three fully processed samples: processed without SSC (red, Full-SSC), processed with SSC (green, Full+SSC), processed with SSC and GOx labelled with Au nanoparticles (blue, Full+SSC+Au). In the inset, a zoom between 80eV and 93eV showing the Au 4f shell signal of the last mentioned sample. No signal was observed in the other samples.