Expression of HGF/SF, c-met, and tPA in the adult olfactory bulb. The left panels are bright-field images, and the right panels are corresponding dark-field images. Hybridization of³⁵S-labeled antisense cRNA probes with adult olfactory bulb sagittal sections. A, Expression of HGF/SF is restricted to the periglomerular cells in the GL. B,c-met expression is confined to the MCL and the ONL.C, Expression of tPA is high in the ONL and lower in the MCLs and GCLs. Scale bar, 255 μm. See legend to Figure 3 for abbreviations.