“…It is possible to use this microsphere in removing mutant protein from serum using this microsphere, due to the surface of SiO 2 and nickel, in conjugation with the molecular template of phenylalanine dehydrogenase in an aqueous solution with an imprinted polymer. The treatment of phenylketonuria with the help of gene therapy is possible with the help of magnetic nanoparticles [ [115] , [116] , [117] , [118] ].…”