title: Further observations on the endogenous morphine-like system in relation to congenital insensitivity to pain.
mesh_terms: D006801:Humans; D007866:Leg / Q000294:innervation; D009020:Morphine / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D009619:Nociceptors / Q000502:physiology*; D000699:Pain Insensitivity, Congenital / Q000209:etiology / Q000503:physiopathology*; D012018:Reflex / Q000187:drug effects / Q000502:physiology; D012023:Reflex, Monosynaptic / Q000187:drug effects; D012119:Respiration / Q000187:drug effects
chemical_list: D009270:Naloxone; D009020:Morphine