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. 2022 May 31;22(11):4186. doi: 10.3390/s22114186

Figure 3.

Figure 3

(a) High-resolution C 1s spectra for differently activated electrodes before protein adsorption. High-resolution N 1 s XPS spectra after (b) protein A and (d) BSA adsorption, and S 2p XPS spectra measured after (c) protein A and (e) BSA adsorption.