Analysis of the pattern of expression of RET-RGS-d in the retina by in situ RNA hybridizations. Bovine retina sections were hybridized as described in Materials and Methods with antisense rod Tα (A), antisense RET-RGS-d (B), and sense RET-RGS-d (C) RNA probes. OS, outer segments; IS, inner segments; ONL, outer nuclear layer; OPL, outer plexiform layer; INL, inner nuclear layer; IPL, inner plexiform layer; GL, ganglion layer.