Fig. 3. Expression of RH2-3 and RH2-4 in an adult zebrafish retina. (A) A transverse section of an eye at 2 years pf hybridized with the RH2-3 3'-UTR probe. Double arrows indicate the areas of RH2-3 expression. (B,C) Neighboring transverse sections at higher magnification hybridized with the RH2-3 3'-UTR (B) and RH2-4 3'-UTR (C) probes. In all panels, the dorsal side is to the top and ventral is to the bottom. Scale bars, 200 µm (A) or 50 µm (B and C).