Fig. 3.

Template showing a coronal half-section of the tree shrew brain at level A 2.0 (see Tigges and Shantha, 1969), indicating changes in the number and distribution of BrdU-labeled cells (open circles) with increased survival time after BrdU injection. Most BrdU-labeled cells are located in the sgz, between thegcl and hilus at the 2 and 24 hr time points. Three weeks after BrdU injection, most BrdU-labeled cells are located in thegcl and are NSE-immunoreactive (solid dots). cc, Corpus callosum; 3V, third ventricle; h, hilus; CA1, CA1 region; CA3, CA3 region.