PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
6291560-2	1980	The superoxide anion (O-2) was generated in vitro using the xanthine oxidase-hypoxanthine system.	Hypoxanthine	77-89	immunoglobulin kappa variable 1D-39	Homo sapiens	22-25	
6323433-4	1984	This hypothesis was tested by measuring the catalytic activity of 12 different iron chelates using hypoxanthine and xanthine oxidase to generate O-.2.	Hypoxanthine	99-111	immunoglobulin kappa variable 1D-39	Homo sapiens	145-149