Figure 2.

eYFP-labeled hilar neurons express GluA2 in both the dorsal and ventral DG but express calretinin (CR) in only the ventral region. A–F, Numerous hilar neurons in the dorsal and ventral DG express eYFP (A, D), are labeled for GluA2 (B, E), and are virtually all double labeled (C, F). G–L, Presumed MCs in the dorsal and ventral hilus are labeled for eYFP (G, J) but lack CR labeling in the dorsal hilus (H, I) where only a small number of interneurons or immature granule cells are labeled for CR. In contrast, essentially all eYFP-labeled neurons in the ventral hilus (J) express CR (K, L). Scale bars: 100 µm (A–L).