title: Editorial for transmural gradients issue.
authors.forename: Ira
authors.initials: I
authors.lastname: Cohen
authors.forename: Denis
authors.initials: D
authors.lastname: Noble
mesh_terms: D055724:Electrophysiological Phenomena; D005786:Gene Expression Regulation; D006321:Heart / Q000502:physiology*; D007473:Ion Channels / Q000378:metabolism; D009206:Myocardium / Q000166:cytology / Q000378:metabolism
chemical_list: D007473:Ion Channels