Stock Photo - Scientist Ales Panacek of Univerzita (University) Palackeho in Olomouc presents Biomedical and environmental applications of metal nanoparticles and nanocomposites in Olomouc, Czech Republic, January 23, 2018. (CTK Photo/Ludek Perina)

Stock Photo: Scientist Ales Panacek of Univerzita (University) Palackeho in Olomouc presents Biomedical and environmental applications of metal nanoparticles and.