PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 22899923-11 2012 Finally, the OPRM1 SNP rs1799971 was related to changes in norepinephrine, lactate, and rate of perceived exertion (RPE) during exercise. Lactic Acid 75-82 opioid receptor mu 1 Homo sapiens 13-18