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. 2017 Apr 25;8:15130. doi: 10.1038/ncomms15130

Figure 2. XPS analysis of GNCs and GNC–siRNA complex.

Figure 2

XPS spectra for the chemical element of gold (Au), sulfur (S), carbon (C), nitrogen (N), oxygen (O) and phosphor (P), respectively, on the surface of GNCs (a) and on the surface of GNC–siRNA complex (b).