Figure 4: (a) Silver-stained SDS-PAGE (15 %) of SeNPs (50 μg) indicating the presence of few proteins. (b) FTIR analysis of SeNPs showing peaks at 3405, corresponding to the N-H stretch; 2917 and 2849, the C-H stretch; 1634, 1462, and 1384, the amide bond; and 1049, the C-O stretch.