Fig. 1.
Photomicrographs displaying BrdU-labeled cells in prairie and meadow voles. For the dentate gyrus of the hippocampus (A), prairie voles (top) had fewer BrdU-labeled cells than did meadow voles (bottom). CA4, CA4 layer of the hippocampus; GrL, granule cell layer; Hil, hilus. For the central nucleus of amygdala (CeA; B), BrdU-labeled cells did not appear to differ between prairie (top) and meadow (bottom) voles. Scale bars = 200 μm.