Figure 2.

Dose-dependent effect of HN and AgNPs on cell viability of SH-SY5Y cells. (A) The viability of SH-SY5Y cells was determined after 24-h exposure to different concentrations of HN (0.1–20 µg/mL) (B) The viability of SH-SY5Y cells was determined after 24-h exposure to different concentrations of AgNPs (3.125–50 µg/mL). At least three independent experiments were performed for each sample. The results are expressed as the mean ± standard deviation of three independent experiments. Differences between the treated and control groups were measured using Student’s t-test. Statistically significant differences between the treated and control group are indicated by (* p < 0.05).