Process Chemistry Ontology	Placental Investigative Technique	Source
http://purl.obolibrary.org/obo/OBI_0000415	https://pat.nichd.nih.gov/patinvestigativetechniques/IT.14	LOOM
http://purl.obolibrary.org/obo/CHMO_0001000	https://pat.nichd.nih.gov/patinvestigativetechniques/IT.03	LOOM