title: Proceedings: Apparatus for recording contractile activity in Purkinje fibres and other contractile preparations.
mesh_terms: D000818:Animals; D006329:Heart Conduction System / Q000502:physiology*; D066298:In Vitro Techniques; D009200:Myocardial Contraction; D011690:Purkinje Fibers / Q000502:physiology*; D012756:Sheep