PRO_ID	Object_term	Object_syny	Modifier	Relation	Ontology_ID	Ontology_term	Relative_to	Interaction_with	Evidence_source	Evidence_code	Taxon	Inferred_from	DB_ID	Date	Assigned_by	Comment
PR:P04202-1	transforming growth factor beta-1 isoform 1 (mouse)	mTGFB1/iso:1		acts_upstream_of_or_within	GO:0030879	mammary gland development			PMID:1821856	IDA	NCBITaxon:10090		UniProtKB:P04202-1	20080301	PRO:CNA