Opioid analgesic/Related Articles
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- See also changes related to Opioid analgesic, or pages that link to Opioid analgesic or to this page or whose text .
- Opium poppy : The plant, Papaver somniferum, which produces crude opium
- Opioid receptor : G-protein coupled receptors located in the brain and various organs that bind opiates or opioid substances as ligands.