PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
6571228-0	1983	Antagonism of enkephalin action on acetylcholine release by methylxanthines: lack of a purine link.	methylxanthine	60-75	proenkephalin	Rattus norvegicus	14-24