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Blood Cells and Bone Marrow

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From The Biology of Prenatal Development.

Script: Do 15 týždňov dôjde k vytvoreniu krvotvorných kmeňových buniek, ktoré sa rozmnožujú v kostnej dreni. Tu sa bude tvoriť väčšina krvných buniek.

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

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Blood Cells and Bone Marrow

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Blood Cells and Bone Marrow

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3 months, 3 weeks