00000 A) Epinephrine OB) Isoproterenol Prazosin Ayf C) Phenylephrine D) Physostigmine F) Tyramine Control Time 161. Drug X is injected intravenously into three subjects (including one control subject). The control subject is not pretreated, whereas the other two subjects are pretreated with either prazosin or cocaine. Blood pressure is recorded directly from the brachial artery (see graph). Drug X is most likely which of the following? Cocaine 4
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