PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
11752206-6	2002	Chronic treatment with DAMGO or methadone produced internalization of enhanced yellow fluorescent protein-tagged MOR expressed in hippocampal neurons within hours, whereas morphine produced internalization much more slowly, even when accompanied by overexpression of beta-arrestin-2.	Methadone	32-41	arrestin, beta 2, pseudogene	Rattus norvegicus	267-282	
27317580-7	2016	Methadone and fentanyl, but not morphine, induced potent micro-opioid receptor internalization accompanied by the strong recruitment of beta-arrestin-2 in micro-opioid receptor-overexpressing cells.	Methadone	0-9	arrestin, beta 2, pseudogene	Rattus norvegicus	136-151