title: [Effect of L-tryptophan on analgesia produced by stimulation of the periaqueductal gray matter].
mesh_terms: D000368:Aged; D004580:Electronarcosis; D006801:Humans; D008875:Middle Aged; D010148:Intractable Pain / Q000503:physiopathology / Q000628:therapy*; D010487:Periaqueductal Gray / Q000187:drug effects / Q000502:physiology*; D014364:Tryptophan / Q000494:pharmacology*
chemical_list: D014364:Tryptophan
vernacular_title: Acción del L-triptófano sobre la analgesia producida por la estimulación de la sustancia gris periacueductal.