Fig. 10.

The effect of a single-dose exposure to lethal and sub-lethal concentrations of NPs on the proliferation of HaCaT cells. a The NPs induced growth inhibition in the HaCat cells exposed to PENPs (50 and 100 µg mL⁻¹), PSNPs (50 and 100 µg mL⁻¹), NPs-1 (50 and 100 µg mL⁻¹), NPs-2 (50 and 100 µg mL⁻¹) and H₂O₂ (50 & 100 µM). b The relative difference in the proliferation index among the NPs. Error bars indicate standard error