
Keywords: μOR-δOR heteromer; Anti-diarrhea; Eluxadoline; Loperamide; Irritable bowel syndrome; GI; gastrointestinal; IBS-d; irritable bowel syndrome with diarrhea; μOR; mu opioid receptor; δOR; delta opioid receptor; βgal; beta-galactosidase; GTPγS; guanosine