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The Endowment for Human Development
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Blood Cells and Bone Marrow


3 months, 3 weeks

From The Biology of Prenatal Development.Buy Now

Script: Mugihe c' amayinga 15, nibwo utuburungu tuvyara amaraso tuza, tukizingira mu igufwa ritarakomera. Utuburungu dukora amaraso tuzoboneka aha.

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