Epigenetic Process	Sequence Types and Features Ontology	Source
http://purl.obolibrary.org/obo/SO_0001706	https://pat.nichd.nih.gov/patepigeneticprocess/P00000459	LOOM
http://purl.obolibrary.org/obo/SO_0001700	https://pat.nichd.nih.gov/patepigeneticprocess/P00000069	LOOM