PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
31804169-5	2020	It has been observed that nickel exposure induces the generation of reactive oxygen species which leads to the increased expression of p53, NF-kbeta, AP-1, and MAPK.	Oxygen	77-83	tumor protein p53	Homo sapiens	135-138