Medicine and Health Sciences Commons^™

We have used immunocytochemistry and in situ hybridization to examine the expression of photoreceptor specific genes in retinas of normal dogs and those affected with hereditary cone degeneration (cd), a rare autosomal recessive disorder that selectively affects cones. In thecdretina, cone disease begins early in life; cones are lost by extrusion of the nucleus into the inner segment, and later, by displacement of the nucleus, surrounded by a thin rim of cytoplasm, into the interphotoreceptor space. Two micrometer sections from the superior and inferior retinal meridians, extending from the optic disk to the ora serrata, were used for in situ …