Effects of CrVI on the expression of phosphorylated (p) AKT, caspase 3, PCNA, cyclin A, cyclin B and CDK1 in cultured whole fetal ovaries on culture day 12. Fetal ovaries from embryonic day (E) 13.5 were cultured for 12 days in vitro and treated with CrVI (0.1 ppm) from CD2 to CD8, and harvested on CD12 (which recapitulated PND4). Ovaries from culture were harvested and fixed in 4% buffered paraformaldehyde and processed for IHC. Integrated Optical Density (IOD) of staining was quantified using Image ProPlus software. The width of field for each image is 220 or 350 µm; pAKT (A-C), PCNA (D-F), cyclin A (G-I), cyclin B (J-L) and CDK1 (M-O). *: Control vs CrVI, p<0.05. Each value represents mean ± SEM of 10 ovaries. Representative images and histograms are shown.