title: Plasma serotonin and migraine headache.
mesh_terms: D004357:Drug Synergism; D006801:Humans; D008784:Methysergide / Q000494:pharmacology; D008881:Migraine Disorders / Q000209:etiology*; D009638:Norepinephrine / Q000502:physiology; D012701:Serotonin / Q000097:blood* / Q000494:pharmacology
chemical_list: D012701:Serotonin; D009638:Norepinephrine; D008784:Methysergide