title: A defect of relaxing system in heart failure.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D006224:Cricetinae; D006333:Heart Failure / Q000378:metabolism*; D009119:Muscle Contraction; D009124:Muscle Proteins / Q000302:isolation & purification*; D012519:Sarcoplasmic Reticulum; D013053:Spectrophotometry
chemical_list: D009124:Muscle Proteins; D002118:Calcium