Contractile ProteinsMyosinsTropomyosinMuscle ProteinsActinsMyofibrilsMyosin Heavy ChainsTroponinMuscle ContractionMyosin Light ChainsEscinMusclesTroponin IMyocardial ContractionCalciumActomyosinMyocardiumCardiac MyosinsMuscle, SmoothSarcomeresSkeletal Muscle MyosinsMuscle, SkeletalHeartMyocytes, Smooth MuscleTroponin TActininMuscle, Smooth, VascularMuscle Fibers, SkeletalPostpericardiotomy SyndromeCalmodulin-Binding ProteinsMycoplasmatalesPapillary MusclesMicrofilament ProteinsRabbitsArthrogryposisSmooth Muscle MyosinsActin CytoskeletonMuscle Fibers, Slow-TwitchMuscle Fibers, Fast-TwitchIsometric ContractionPotassium ChlorideMuscle DevelopmentCells, CulturedCoturnixCaffeineAdenosine TriphosphatasesCell DifferentiationDiaphragmMyogeninPyridazinesSarcoplasmic ReticulumMuscular AtrophyHeart VentriclesHypertrophyRNA, MessengerHalothaneGene Expression RegulationGuinea PigsCytoskeletonFerretsRats, Inbred StrainsCardiomegalyMyosin-Light-Chain KinaseMesenteric ArteriesCalcium-Binding ProteinsMyoD ProteinPhosphorylationMicroscopy, ElectronVasoconstrictionElectrophoresis, Polyacrylamide GelPhenotypeMechanotransduction, CellularAnimals, NewbornChick EmbryoTime FactorsRats, WistarFluorescent Antibody TechniqueAortaMyosin SubfragmentsCardiomyopathy, HypertrophicCa(2+) Mg(2+)-ATPaseMyocytes, CardiacFetusTracheaProtein IsoformsMuscle StrengthCardiotonic AgentsMyogenic Regulatory FactorsSignal TransductionAdenosine TriphosphateBase SequencePotassiumDogsRats, Sprague-DawleyDose-Response Relationship, DrugStress, MechanicalCalcium-Transporting ATPasesGene ExpressionOrgan SizeVentricular Function