assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:4845 IAO:0000115 A pilocytic astrocytoma that is characterized by a monomorphic architectural pattern, usually associated with the absence of Rosenthal fibers and eosinophilic granular bodies. xsd:string "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://pubmed.ncbi.nlm.nih.gov/30945015/""},{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://radiopaedia.org/articles/pilomyxoid-astrocytoma?lang=us""}]}"