| Group | Description | Incubation Media | Abbreviation |
| 1 | Control | cEMEM + PBS | C |
| 2 | MPG only | cEMEM + neat MPG | M |
| 3 | Selenite only | cEMEM + Na2SeO3 | S |
| 4 | Selenite + MPG | cEMEM + Na2SeO3 + neat MPG | S + M |
| 5 | Selenite + MPG adsorbed onto carboxylated ND | cEMEM + Na2SeO3 + ND-COOH: MPG | S + COOH: M |
| 6 | Selenite + MPG adsorbed onto aminated ND | cEMEM + Na2SeO3 + ND-NH2: MPG | S + NH2: M |
| 7 | Selenite + MPG adsorbed onto hydroxylated ND | cEMEM + Na2SeO3 + ND-OH: MPG | S + OH: M |