title: Evidence that clonidine can activate histamine H2-receptors in rat cerebral cortex.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D002540:Cerebral Cortex / Q000187:drug effects*; D003000:Clonidine / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D006632:Histamine / Q000494:pharmacology; D006633:Histamine Antagonists / Q000494:pharmacology; D008297:Male; D008785:Metiamide / Q000494:pharmacology; D009638:Norepinephrine / Q000494:pharmacology; D051381:Rats; D011968:Receptors, Histamine / Q000187:drug effects*; D011970:Receptors, Histamine H2 / Q000187:drug effects*
chemical_list: D006633:Histamine Antagonists; D011968:Receptors, Histamine; D011970:Receptors, Histamine H2; D008785:Metiamide; D006632:Histamine; D003000:Clonidine; D009638:Norepinephrine