PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
4366871-0	1972	[Actions induced by urea and guanidine on xanthine dehydrogenase].	Urea	20-24	xanthine dehydrogenase	Homo sapiens	42-64	
18600557-0	2008	Mechanism of transition from xanthine dehydrogenase to xanthine oxidase: effect of guanidine-HCL or urea on the activity.	Urea	100-104	xanthine dehydrogenase	Homo sapiens	29-51