Pre- and Postnatal Development and Ageing of the Heart: Ultrastructural Results and Quantitative Data |
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100 mitochondria 14 days 14th day 1st month 24 27months Diagram 27th month 3rd day 6th month 7th day adult animals atria autophagic vacuoles bodies per 100 cardiac muscle cells cardiocytes cent chicken chondria connective tissue cells cristae cytoplasm days old development and ageing Diagr differentiation diminishes embryos endothelial cells fetal fetuses glycogen golden hamster Golgi apparatus granular endoplasmic reticulum heart muscle cells hypertrophy intercalated disks intercellular space left ventricle lipid bodies lipofuscin bodies lysosomes m²/cm³ male rats membrane mito myoblasts myocardial cells myocardium myocytes myofibrils myosin non-cardiocytes number increases number of mitochondria numerical density observed organelles percentage phase polysomes postnatal development processes quantitative ratio ribosomes right and left right ventricle sarcolemma sarcomeres sarcoplasmic reticulum sinoatrial node specific surface density structure subsarcolemmal T-tubules total number transversal tricle ultrastructure um³ Ventricle At birth ventricle of male volume density week Z lines µm² µm³