Plant Ontology Thesaurus for Animal Physiology and Livestock Systems Source
http://purl.obolibrary.org/obo/PO_0020021 http://purl.obolibrary.org/obo/TP_0000257 LOOM
http://purl.obolibrary.org/obo/PO_0025078 http://purl.obolibrary.org/obo/wiktoria_0000496 LOOM
http://purl.obolibrary.org/obo/PO_0020036 http://purl.obolibrary.org/obo/TP_0000325 LOOM