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. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: Colloids Surf B Biointerfaces. 2016 Apr 26;145:122–129. doi: 10.1016/j.colsurfb.2016.04.043

Fig. 3.

Fig. 3

XPS spectra. (a) Spectra of the l-Se sample and PDM film. (b) The Se high resolution XPS spectra of l-Se, d-Se and samples incubated in PBS for 1 week, 3 weeks or 5 weeks.