[The possible mechanism of the activity of cardiac pacemaker (author's transl)].
D000818:Animals; D002118:Calcium / Q000378:metabolism; D002395:Catecholamines / Q000502:physiology; D000242:Cyclic AMP / Q000502:physiology; D006152:Cyclic GMP / Q000502:physiology; D006321:Heart / Q000502:physiology*
D002395:Catecholamines; D000242:Cyclic AMP; D006152:Cyclic GMP; D002118:Calcium