Histamine as a factor in tolerance to levarterenol.
D004361:Drug Tolerance; D006632:Histamine / Q000494:pharmacology*; D006801:Humans; D009638:Norepinephrine / Q000494:pharmacology*
D006632:Histamine; D009638:Norepinephrine
HISTAMINE/pharmacology; NOREPINEHRINE/pharmacology