Hypotensive effect of morphine. Influence of histamine on acute tolerance to the drug.
D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D002339:Carotid Arteries; D002415:Cats; D004361:Drug Tolerance / Q000187:drug effects*; D005260:Female; D006632:Histamine / Q000494:pharmacology*; D007022:Hypotension / Q000139:chemically induced*; D008297:Male; D009020:Morphine / Q000008:administration & dosage
D009020:Morphine; D006632:Histamine