title: [Pain and opioid peptides].
mesh_terms: D015670:Acupuncture Therapy; D000769:Anesthesia, Inhalation; D004723:Endorphins / Q000378:metabolism*; D006801:Humans; D010146:Pain / Q000378:metabolism*; D000699:Pain Insensitivity, Congenital / Q000378:metabolism
chemical_list: D004723:Endorphins