[Electron microscopic studies on the development of the human embryonic myocardium. 1. Myofibrils].
D005260:Female; D005865:Gestational Age; D006321:Heart / Q000196:embryology*; D006801:Humans; D008854:Microscopy, Electron; D009210:Myofibrils / Q000166:cytology*; D011247:Pregnancy