Figure 6.
Age-dependent changes in the cellular composition of the mouse third ventricle subventricular zone (tv-SVZ). (A, B) Representative hematoxylin and eosin-stained sections of the third ventricle in young and adult mice. (C, D) Glial fibrillary acidic protein (GFAP)-positive cells are barely detected in the third ventricle in a young mouse (C) whereas an adult mouse exhibits focal GFAP immunoreactivity with diffuse expression in ependymal cells (D). (E, F) Rare nestin-positive cells in a young mouse (E); an adult moue ependymal layer contains numerous nestin-immunopositive cells (F). Arrowheads indicate blood vessels, which serve as internal positive controls. (G, H) Acetylated tubulin immunostaining illustrates age-dependent reduction in the number of cilia. The cilia appear relatively shorter than those in the human tv-SVZ.