By studying Syp expression in the CA1 region of the hippocampus of ischemic gerbils, Ishimaru et al. (2001) found that on day two after ischemia, Syp expression was significantly reduced in the hippocampus in the primordium, radial layer, and parietal dendrites of neurons in the CA1 region and disappeared in the white matter. This evidence concerns the gene SYP and ischemia.