title: Early stages of myofibrillogenesis in human embryonic and fetal heart.
mesh_terms: D004622:Embryo, Mammalian; D005260:Female; D005333:Fetus; D006321:Heart / Q000196:embryology*; D006801:Humans; D008854:Microscopy, Electron; D009206:Myocardium / Q000648:ultrastructure; D009210:Myofibrils / Q000648:ultrastructure*; D011247:Pregnancy