_:vb50942951 . _:vb50942951 "A retinitis pigmentosa that has_material_basis_in mutation in the CRB1 gene on chromosome 1q31.3."^^ . _:vb50942951 . _:vb50942951 "url:https://www.ncbi.nlm.nih.gov/pubmed/10508521"^^ . _:vb50942951 . _:vb50942951 . _:vb50942951 .