| CeO2-phm | porous ceria hollow microspheres |
| CeO2-c | commercial CeO2 nanospheres with solid cores |
| SPCE | screen-printed carbon electrode |
| ROS | reactive oxygen species |
| CeO2 | cerium dioxide |
| cMWCNTs | carboxylated multi-walled carbon nanotubes |
| Ce(NO3)3·6H2O | Cerium nitrate hexahydrate |
| EG | ethylene glycol |
| NHS | N-hydroxysuccinimide |
| EDC | 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride |
| AA | ascorbic acid |
| Glu | glucose |
| CA | citric acid |
| UA | uric acid |
| NaCl | sodium chloride |
| PBS | Phosphate-buffered saline |
| CeO2-c | commercial CeO2 nanospheres |
| DLS | dynamic light scattering |
| PDI | polydispersity index |
| FBS | Fetal Bovine Serum |