title: New approaches to pain.
mesh_terms: D006801:Humans; D018377:Neurotransmitter Agents / Q000378:metabolism; D009619:Nociceptors / Q000502:physiology; D010146:Pain / Q000523:psychology*; D010551:Personality; D011957:Receptors, Opioid / Q000502:physiology; D012684:Sensory Thresholds
chemical_list: D018377:Neurotransmitter Agents; D011957:Receptors, Opioid