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Script: Iimveke ezisishiyagalombili zibonisa ukuphela kwesikhathi se-embryonic. Ngalesi isikhathi, i-embryo yomuntu ikhule ukusukela kuseli linye yaqishe yaba maseli ayi 1 billion akha imakhiwo engaphezulu kwe 4,000 eyahlukileko (anatomic structures). I-embryo manje inangaphezulu kwe 90% yemakhiwo etholakala kwabadala. | ||
All ages referenced to fertilization, not last menstrual period. |