I: Assembly of Myofibrillar Proteins in Striated Muscle.- 1. Myofibrillogenesis in Cardiac Muscle.- 2. Dynamics of Contractile Proteins Constituting Myofibrils in Living Muscle Cells.- 3. Emergence of the First Myofibrils and Targeting Mechanisms Directing Sarcomere Assembly in Developing Cardiomyocytes.- 4. Tropomodulin: An Important Player in Cardiac Myofibrillogenesis.- II: Maintenance and Manipulation of Myofibrillar Organization.- 5. Maintaining the Fully Differentiated Cardiac Sarcomere.- 6. Manipulation of Myofibrillogenesis in Whole Hearts.- III: Regulation of Expression of Myofibrillar Proteins.- 7. Molecular Regulation of Cardiac Myofibrillogenesis: Roles of Serum Response Factor Nkx2-5, and GATA-4.- 8. Regulation and Organization of Human Troponin Genes.- 9. Signal Transduction in Myofibrillogenesis Cell Growth, and Hypertrophy.- 10. Cytoskeletal Gene Expression in the Developing Cardiac Conduction System.- IV: Heart Development and Myofibrillar Organization.- 11. Onset of a Cardiac Phenotype in the Early Embryo.- 12. Cellular Molecular, and Developmental Studies on Heart Development in Normal and Cardiac Mutant AxolotlsAmbystoma mexicanum.- V: Cardiomyopathy and Myofibrillar Organization.- 13. The Function of Normal and Familial Hypertrophic Cardiomyopathy-Associated Tropomyosin.- 14. Cardiomyopathies and Myofibril Abnormalities.