Figure 3. Immunohistochemical evaluation of expression of postsynaptic density protein 95 (PSD-95) and calretinin in 12-month-old WNIN/GR-Ob rat. A-F: PSD-95 and G-L: calretinin. Nuclei are labeled with 4,6-diamidino-2-phenylindole (DAPI). Scale bar, 50 µm.