Figure 2.
Examples of immunohistochemical markers. A, After kainate injection, all mature granule neurons and some BrdU-labeled 16-d-old NeuN+ neurons expressed zif268, indicating synaptic activation. GCL, granule cell layer B, Dividing cells (arrows) were identified using PCNA immunohistochemistry. C, Cells surviving 2-3 weeks (arrows) were identified with BrdU immunohistochemistry (gray-brown); immunonegative cells were stained with blue-purple counterstain.