PDE6B and retinal degeneration: For contrasting rod/cone degenerations, in this study we compared two forms of inherited retinal degeneration in mice Mus Musculus, the C3H/HeJ-Pde6brd1 mouse (rd1) and the C3A.Cg-Pde6b+Prph2Rd2/J mouse (Rd2) [26].