title: Congenital insensitivity to pain, and endogenous morphine-like substances.
mesh_terms: D006801:Humans; D007866:Leg / Q000294:innervation; D009270:Naloxone / Q000494:pharmacology; D000699:Pain Insensitivity, Congenital / Q000209:etiology*; D011957:Receptors, Opioid / Q000187:drug effects; D012018:Reflex / Q000187:drug effects; D011984:Sensory Receptor Cells / Q000187:drug effects
chemical_list: D011957:Receptors, Opioid; D009270:Naloxone