Life SciencesCell BiologyDevelopmental BiologyCell DivisionCell ProliferationDevelopmental Cell BiologyCardiovascular DevelopmentCongenital Heart DiseaseCytoplasmic DivisionDevelopmental ProliferationHeart DevelopmentMitosisCardiac Developmental PhysiologyCardiomyocyte ProliferationCell Proliferation In DevelopmentPostnatal Growth PatternsPostnatal Growth Regulation