Perinatal arsenic exposure does not alter proliferation of NPC at PD35 in male mice.

<p>Representative images of neural progenitor cell (NPC) proliferation at PD35 in the dentate gyrus: (<b>A</b>) Colocalization of Ki67 (endogenous mitotic marker) and BrdU (exogenous S-phase marker) determine the proliferating pool of neural progenitor cells in (<b>B</b>) control and (<b>C</b>) arsenic-exposed animals. (<b>D</b>) There was no significant effect of treatment on the proliferation of neural progenitor cells, <i>n</i> = 7–9 mice per group (each from different litters). Results are expressed as the mean ± SEM. DAPI (blue), BrdU (green), Ki67 (red).