Figure 2

Intracellular ROS production following exposure of the HK-2 cells to the panel of engineered nanomaterials. The cells were exposed to the NM for 4 hr with oxidative stress measured via HE oxidation by flow cytometry. Values represent mean ± SEM (n = 6) A) Ag - NM 300 B) ZnO - NM 110 and NM 111 C) TiO₂ - NM 101, NRCWE 001, 002, 003 and 004 D) MWCNT - NM 400 and NM 402.