. _:vb50947537 . _:vb50947537 . . . _:vb50947537 . "disease_ontology"^^ . _:vb50947537 . _:vb50947537 . "DOID:11166"^^ . "HPV"^^ . "A viral infectious disease that has_material_basis_in human papillomaviruses, which establish productive infections only in the stratified epithelium of the skin or mucous membranes. These viruses cause warts and sometimes tumors. They are transmitted_by sexual contact."^^ . "Human papillomavirus infectious disease"^^ . "MESH:D030361"^^ .