On the contrary, the ischemia-affected region contained structures with diminished NeuN-immunoreactivity (Figures 9B′′,C′) without an immunosignal for Kv3.1b (Figure 9B′′′), and only parvalbumin-stained coarse neuropil as well as a few remnants of shrunken neurons (Figure 9C′′). The gene discussed is PVALB; the disease is ischemia.