_:vb50940879 "url:https://www.ncbi.nlm.nih.gov/pubmed/10932188"^^ . _:vb50940879 "An orofacial cleft that has_material_basis_in by homozygous mutation in the PVRL1 gene on chromosome 11q23."^^ . _:vb50940879 . _:vb50940879 . _:vb50940879 . _:vb50940879 . _:vb50940879 .