PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
17439728-5	2007	The effect of bufalin on dihydrofolate reductase (DHFR) expression was studied by RTPCR and Western blotting.	bufalin	14-21	dihydrofolate reductase	Homo sapiens	50-54