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The Endowment for Human Development
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Age of Viability


5 months, 1 week

From The Biology of Prenatal Development.Buy Now

Script: A 21 o 22 settimane dopo la fecondazione, i polmoni acquisiscono una certa capacità di respirare aria. Questo viene considerato il periodo della vitalità perché sopravvivere al di fuori del ventre materno diventa possibile.

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