Effects of 4 adrenergic drugs (Noradrenaline, Isoprenaline, Phenylephrine, and Tyramine) on contractions of the isolated duodenal preparation (Finkleman). Traces are available for different doses of noradrenaline and single doses of the other agonists. All can be administered either alone or in combination with an a-receptor blocker (phentolamine), a B-receptor blocker (propranolol), guanethidine or imipramine. Flash animation
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The Finkleman Preparation
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Sheffield BioScience Programs