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The Endowment for Human Development
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: À 15 semaines, les cellules embryonnaires hématopoïétiques sont arrivées et se multiplient dans la moelle osseuse. Une formation complémentaire de cellules sanguines se produira ici.

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