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The Endowment for Human Development
The Endowment for Human Development
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The Developmental Period


7 weeks, 4 days

From The Biology of Prenatal Development.Buy Now

Script: The developmental period before birth is increasingly understood as a time of preparation during which the developing human acquires the many structures, and practices the many skills, needed for survival after birth.

All ages referenced to fertilization, not last menstrual period.
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