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The NeuNposBrdUpos cells are not undergoing ischemia-induced apoptosis. Immunostaining for BrdU, NeuN and caspase-3 on day 7 (A) and day 21 (B) after MCAT. Broken line depicts the infarct border. p, penumbra; i, infarct. Higher magnification images of boxed areas in (A) showing penumbra (P) and infarct (I). Scale bar equals 120 μm (A, B) and 60 μm (P, I).
