[Fast and slow channels].
D000200:Action Potentials; D000818:Animals; D004285:Dogs; D006168:Guinea Pigs; D006321:Heart / Q000502:physiology*; D006801:Humans; D007473:Ion Channels / Q000502:physiology*; D008564:Membrane Potentials; D009200:Myocardial Contraction
D007473:Ion Channels