title: Effect of temperature and calcium on force-frequency relationships in mammalian ventricular myocardium.
mesh_terms: D000200:Action Potentials; D000368:Aged; D000818:Animals; D001706:Biopsy; D002118:Calcium / Q000494:pharmacology*; D004558:Electric Stimulation; D004576:Electromyography; D005318:Fetal Heart / Q000502:physiology; D006168:Guinea Pigs; D006321:Heart / Q000502:physiology; D006801:Humans; D066298:In Vitro Techniques; D007474:Ion Exchange; D008875:Middle Aged; D009119:Muscle Contraction / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism*; D010210:Papillary Muscles / Q000502:physiology; D051381:Rats; D013696:Temperature
chemical_list: D002118:Calcium