Figure 3.
Trace and very long delay conditioning enhance adult neurogenesis. A, More BrdU-labeled cells (arrows) were observed in the dentate gyrus after both trace and very long delay (VLD) conditioning relative to naive rats and those that were trained on the delay task. B, C, Confocal laser-scanning images of BrdU-labeled cells (red) colabeled (arrow) with TuJ1 (B, green), a marker of immature and mature neurons, or the mature neuronal marker NeuN (C, green). The majority of BrdU-labeled cells expressed one of the neuronal markers, and the number of colabeled cells did not vary across groups. gcl, Granule cell layer.