Immune System
http://purl.bioontology.org/ontology/MEDLINEPLUS/C0020962
C0020962
http://purl.bioontology.org/ontology/MEDLINEPLUS/C0021053
https://medlineplus.gov/immunesystem.html
T022
http://www.w3.org/2002/07/owl#Thing
http://purl.bioontology.org/ontology/MEDLINEPLUS/C1456590