Connective Tissue CellsMusclesMyocytes, CardiacMuscle, SmoothMuscle ProteinsCells, CulturedMyocardiumMyocytes, Smooth MuscleMuscle, SkeletalHeartMuscle Fibers, SkeletalMuscle CellsConnective TissueMuscle ContractionMuscle DevelopmentMuscle, Smooth, VascularTime FactorsCalciumCardiac OutputRNA, MessengerArrhythmias, CardiacMyocardial ContractionRats, Sprague-DawleyRabbitsFibroblastsSignal TransductionMyoblasts, CardiacAortaHeart VentriclesMuscle Fibers, Fast-TwitchMuscle DenervationMuscle FatigueImmunohistochemistryCell DifferentiationMuscle Fibers, Slow-TwitchCardiomegalyGene Expression RegulationMitochondria, MuscleMyofibrilsCardiac Surgical ProceduresCell LineMicroscopy, ElectronDeath, Sudden, CardiacGranulation TissuePlatelet-Derived Growth FactorRats, WistarMembrane PotentialsMice, Inbred C57BLMuscle RelaxationPapillary MusclesModels, CardiovascularMuscle, StriatedGuinea PigsCell DivisionAnimals, NewbornChick EmbryoNeck MusclesGene ExpressionOculomotor MusclesSarcolemmaDisease Models, AnimalBlotting, WesternSarcomeresRegenerationModels, BiologicalReverse Transcriptase Polymerase Chain ReactionMuscle SpindlesHeart DiseasesCell ProliferationMolecular Sequence DataAction PotentialsRespiratory MusclesMuscle WeaknessDogsCollagenCardiomyopathiesApoptosisVentricular FunctionElectric StimulationActinsCardiac Pacing, ArtificialDose-Response Relationship, DrugElectrophysiologyMyosin Heavy ChainsKineticsPhosphorylationQuadriceps MuscleAbdominal MusclesExtracellular MatrixCalcium SignalingFluorescent Antibody TechniqueBase SequenceAngiotensin IIIsometric ContractionCell MovementAorta, ThoracicHeart FailureMitochondria, HeartMice, KnockoutCardiac Tamponade