title: Actions of an inert nickel (II) chelate of tetramethyl-1,10-phenanthroline at calcium-dependent sites on the guinea-pig isolated atrium.
mesh_terms: D000818:Animals; D002118:Calcium / Q000502:physiology*; D002614:Chelating Agents / Q000494:pharmacology*; D004558:Electric Stimulation; D005260:Female; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D066298:In Vitro Techniques; D008297:Male; D009200:Myocardial Contraction / Q000187:drug effects; D009532:Nickel / Q000494:pharmacology*; D009638:Norepinephrine / Q000378:metabolism; D010618:Phenanthrolines / Q000494:pharmacology*; D012110:Reserpine / Q000494:pharmacology; D013569:Synapses / Q000187:drug effects
chemical_list: D002614:Chelating Agents; D010618:Phenanthrolines; C027290:3,4,7,8-tetramethyl-1,10-phenanthroline; D009532:Nickel; D012110:Reserpine; D002118:Calcium; D009638:Norepinephrine