PubMed:7586219 / 528-542
Annnotations
DocumentLevelAnnotationSample
{"project":"DocumentLevelAnnotationSample","denotations":[{"id":"PD-UBERON-AE_T1","span":{"begin":0,"end":14},"obj":"http://purl.obolibrary.org/obo/UBERON_0002066"},{"id":"PD-UBERON-AE_T3","span":{"begin":10,"end":14},"obj":"http://purl.obolibrary.org/obo/UBERON_0001638"}],"text":"umbilical vein"}