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Blood vessel size in the dentate gyrus of young and aged mice housed with or without a running wheel. a, The perimeter of the vessels is larger in YR mice compared with age-matchedcontrols(Y;p<0.04) but did not differ from the aged controls (O) or aged runners (OR) (p > 0.21). b, Vessel surface area was greater in YR mice than in all of the other groups (p < 0.05). c, Lectin-stained vessels (red) and DAPI (blue) in the dentate gyrus.
