_:vb50943053 . _:vb50943053 . _:vb50943053 "url:https://www.ncbi.nlm.nih.gov/pubmed/16740911"^^ . _:vb50943053 "A retinitis pigmentosa that has_material_basis_in variation in the chromosome region Xq28."^^ . _:vb50943053 . _:vb50943053 . _:vb50943053 .