Multiwall Carbon Nanotube-Induced Apoptosis and Antioxidant Gene Expression in the Gills, Liver, and Intestine of Oryzias latipes

Figure 2

MWCNT dispersion state. (a) Suspension stability index. The suspension stability index of the MWCNTs at 100 mg/L (100 μg/mL) is expressed as the % of the initial absorbance (λ = 550 nm) at time 0 for MWCNTs suspended in water for 42 and 72 h after dispersion. The spot shows the average stability index measured at every 0, 48, and 72 h. (b) and (c) Zeta-potential value and Zeta average size: the Z-potential values and Zeta average size measure at every at every 0, 24, 48, and 72 h.

(a)

(b)

(c)