Research Article

In Vitro Cytotoxicity of Nanoparticles: A Comparison between Particle Size and Cell Type

Figure 1

Transmission electron microscope (TEM) images of (a) nano ZnO, (b) micro ZnO, (c) nano SiO2, and (d) micro SiO2. Scale bar is 100 nm for all images.
(a)
(b)
(c)
(d)