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Blood Cells and Bone Marrow


3 months, 3 weeks

From The Biology of Prenatal Development.Buy Now

Script: 15 дахь долоо хоногт чөмгөнд цус үүсгэгч эсүүд үржинэ. Цусны эсийн ихэнх нь чөмгөнд үүснэ.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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