Lack of neuronal loss in the entorhinal cortex after 10 min of global ischemia. A–C, Neuronal cells detected in untreated control gerbils by NeuN immunohistochemistry in striatum (A), hippocampus (B), and entorhinal cortex (C). D–F, Animals subjected to 10 min of ischemia and then examined for NeuN immunoreactivity in striatum (D), hippocampus (E), and entorhinal cortex (F) 8 d later. Scale bars: (in D) A, D, 1 mm; (inE) B, E, 200 μm; (inF) C, F, 200 μm.