Figure 2

Effects of increasing concentration of NMs on the oxidation of DCFH to DCF in the presence of C3A cells. The C3A cells were exposed to cell medium (control) or NMs for 24 hr. Results are shown as mean fluorescence intensity minus corresponding control traces (± SEM) from three experiments (n = 3), significance indicated by * = p < 0.05 and ** = p < 0.005, when NM treatments are compared to the control. A) NM 101 B) NM 110 C) NM 111 D) NM 300 E) NM 400 F) NM 402 G) NRCWE 001 H) NRCWE 002 I) NRCWE 003 J) NRCWE 004. LC₅₀ values are indicated for NMs where this value was measurable. For all other NMs the LC₅₀ was not reached following exposure up to 80 μg/cm² after a 24 hr incubation.