Figure 5From: Influence of nanoparticles of platinum on chicken embryo development and brain morphologyCross sections of a granular layer in the cerebral cortex by PCNA staining. (A) Control, (B) 1 ppm, (C) 10 ppm, and (D) 20 ppm. PCNA-positive nuclei (arrows). Scale bars 10 μm.Back to article page