(A–B) Representative images of FOV for analysis of BrdU+ (green), NeuN+ (red), and DCX (blue), showing neuronal replacement in juvenile mice, but not adult at 30d following stroke. (C) Representative images of lateral striatum at 100x magnification. (D) Juveniles had more mature neurons in the injured striatum compared to adult. (E) A marked increase in neuronal replacement in the juvenile brain, compared to adult. Data represent mean ± SEM, scale (A–B) = 100 μm, and scale (C) = 10 μm.