(a)
(b)
Figure 3: МТТ assay after 24 hours of incubation with WO3 nanoparticles. (a) MCF-7 cell line and (b) DPS cells. Data are presented as the (yEr±); . Cells were plated in 96-well plates and left overnight. Then, WO3 nanoparticles (0.2–200 μg/mL) were added, and after 24 hours, a standard MTT test was performed.