Fig. 11. Micrographs of sections from the retina of the adult following in situ hybridization with the rainbow trout UV and blue riboprobes. (A,B) Serial tangential sections from the dorsal retina show that no cone is labelled by the UV riboprobe (A) but all single cones are labelled with the blue riboprobe (B). (C–F) Tangential sections, double labelled with the UV and blue riboprobes, show exclusive labelling of all single cones by the blue riboprobe in the centro-temporal (C) and centro-ventral (D) retina, and in the temporal (E) and ventral (F) periphery. Symbols and nomenclature as in Fig. 5. Magnification bar (in A) is 25 µm and relates to all panels.