Distribution of GFAP and TOAD-64 label. A Discrete GFAP- (green, hollow arrowheads) labeled cells and BrdU- (red, solid arrowhead) labeled cell in the ventricular zone of the thalamus 7 days post-BrdU injection. Note that GFAP-labeled fibers appear to encircle non-labeled, presumably ependymal cells. B GFAP- (green, hollow arrowheads) and BrdU- (red, solid arrowheads) labeled cells 2 days post-BrdU injection in the telencephalic ventricular zone. Some GFAP-labeled cells (arrow) directly abut the lateral ventricle. C TOAD-64-(green) labeled cells and processes in the ventral hypothalamus 14 days post-BrdU injection. D TOAD-64-labeled cells (green, hollow arrowheads) in the principal nucleus of the TS 14 days post-BrdU injection. Three cells (yellow, arrowheads) double-labeled with BrdU and TOAD-64 are out of the plane of focus of the section. For all images, medial is to the left, dorsal is up. Scale bars = 50 µm.