title: Genetic analysis of heterogeneity and variation in retinitis pigmentosa.
mesh_terms: D000483:Alleles; D005260:Female; D005799:Genes, Dominant; D005808:Genes, Recessive; D014644:Genetic Variation; D006801:Humans; D008297:Male; D012174:Retinitis Pigmentosa / Q000235:genetics*; D012306:Risk; D014960:X Chromosome