PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15189677-1 2004 The presence of 6-monoacetylmorphine (6-MAM) is often used to distinguish between heroin (diacetylmorphine) and morphine exposures. 6-O-monoacetylmorphine 16-36 sarcoglycan gamma Homo sapiens 40-43