PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
3979345-1	1985	Polymers of different chemical structure were studied for their effect on the production of carcinogen-protein antigens (CPA) at early stages of benzidine-induced carcinogenesis in mice.	benzidine	145-154	carboxypeptidase A1, pancreatic	Mus musculus	121-124