MNP	magnetic nanoparticles
CeNP	cerium oxide nanoparticles
PEI	Polyethyleneimine
GA	Glutaraldehyde
MPEI	magnetic nanoparticles coated with polyethyleneimine
CePEI	cerium oxide nanoparticles coated with polyethyleneimine
CePEI-GA	cerium oxide nanoparticles coated with polyethyleneimine and reticulated with glutaraldehyde
MCePEI-GA	hybrid iron oxide—cerium oxide nanoparticles coated with polyethyleneimine and reticulated with glutaraldehyde
DPPH	2,2-diphenyl-1-picrylhydrazyl
ABTS, ABTS+•	2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid and corresponding radical cation
NHDF	normal human dermal fibroblasts