title: Contraction of frog myocardium in non-uniform electromagnetic field.
abstract: Tension of the frog heart irradiated by nonuniform electromagnetic field was investigated. Tension changes up to 50% of initial values were observed. The presence of a.c. field gradient is viewed as a possible reason for such alterations.
mesh_terms: D000818:Animals; D055590:Electromagnetic Phenomena; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000528:radiation effects; D011896:Rana temporaria; D013816:Thermodynamics