assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:3274 IAO:0000115 A breast fibrocystic disease that is characterized by the presence of epithelial cell hyperplasia and the absence of epithelial atypia. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://pubmed.ncbi.nlm.nih.gov/34967547/""}]}"