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Silica nanoparticles (SiO2 NPs) have been widely used in the medical and food sciences. However, their toxic effects against bio-macromolecules and cells are not well understood. The present study was aimed to investigate the adverse effects of fabricated SiO2 NPs on the human hemoglobin (Hb) by FTIR, CD, fluorescence, and UV–vis spectroscopic techniques. Moreover, the toxic effects of SiO2 NPs on...