Release of norepinephrine in the central nervous system by theophylline and caffeine.
D000818:Animals; D001921:Brain / Q000378:metabolism*; D001923:Brain Chemistry / Q000187:drug effects; D001933:Brain Stem / Q000032:analysis; D002110:Caffeine / Q000494:pharmacology*; D002247:Carbon Isotopes; D002540:Cerebral Cortex / Q000032:analysis; D005260:Female; D006168:Guinea Pigs; D008297:Male; D009638:Norepinephrine / Q000032:analysis / Q000096:biosynthesis / Q000378:metabolism* / Q000494:pharmacology*; D051381:Rats; D014316:Tritium; D014364:Tryptophan / Q000378:metabolism; D014443:Tyrosine / Q000378:metabolism
D002247:Carbon Isotopes; D014316:Tritium; D002110:Caffeine; D014443:Tyrosine; D014364:Tryptophan; D009638:Norepinephrine