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Proliferation in the human third ventricle subventricular zone (tv-SVZ) decreases with age. (A) Diagram of the region containing the human third ventricle (red box). (B, C) Ki67 immunolabeling of the tv-SVZ in representative specimens from a child (B) and an adult (C). (D) Mean and SD of Ki67 labeling indices (p < 0.005). Scale bar: B, C = 20 μm.
