PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
2721525-1	1989	In 25 cases of breast cancer occurring in perimenopausal age, estrogen receptor (ER) content was determined by the dextran-coated charcoal (DCC) assay and both endogenous-bound estradiol and nuclear DNA concentrations were measured by computerized quantitative analysis on formalin-fixed paraffin-embedded tissue samples.	DICYCLOHEXYLCARBODIIMIDE	140-143	estrogen receptor 1	Homo sapiens	81-83