Clustering of ion channels at the node of Ranvier.
D000200:Action Potentials; D000818:Animals; D006801:Humans; D007473:Ion Channels / Q000502:physiology*; D011188:Potassium / Q000378:metabolism; D011901:Ranvier's Nodes / Q000502:physiology*
D007473:Ion Channels; D011188:Potassium