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Silver staining in external capsule at 21 days and 92 days after third sham or mild traumatic brain injury (mTBI) in post-natal day 18 rats. Low-power (scale bar = 100 μm) views of coronal sections at approximately −3.0 to 4.5 mm, bregma. Insets include higher magnification (scale bar = 10 μm) image of positive axonal silver staining indicated by an arrow. Color image is available online at www.liebertpub.com/neu
