PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
21081778-1	2011	BACKGROUND: In the present study we examined the effect of the tumor necrosis factor (TNF)-alpha antagonist etanercept on the antinociceptive effect of morphine in morphine-tolerant rats.	Morphine	152-160	tumor necrosis factor	Rattus norvegicus	63-96	
21081778-7	2011	In addition, the expression of TNFalpha mRNA was increased by 2.5-fold, interleukin (IL)-1beta mRNA increased by 13-fold and IL-6 mRNA by 111-fold in the dorsal spinal cord of morphine-tolerant rats.	Morphine	176-184	tumor necrosis factor	Rattus norvegicus	31-39