Iterative Cellular Screening System for Nanoparticle Safety Testing

Figure 4

Relative mRNA expression of il-8 and hsp70 from NIH-3T3 cells (a) and A549 cells (b) upon treatment with ZnO-NP or TiO₂-NP for 24 h. NIH-3T3 cells were exposed to 20 μg/mL and A549 cells to 40 μg/mL ZnO-NP or TiO₂-NP. Data points are means ± SD for . Significant differences versus the control group are indicated in the figure (ANOVA, one way). .

(a)

(b)