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Characterization of Bio-SeNPs. The SEM (A) and EDS (B) showed that the SeNPs were irregular spheres with a high content of elemental Se. The DLS spectrum (C) indicated the diameters of the nanoparticles. The FT-IR (D) and XPS (E,F) spectra exhibited proteins, lipids, inorganic ions and Se(0) in Bio-SeNPs.
