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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: 21 a 22 semanas después de la concepción, los pulmones adquieren cierta capacidad para respirar aire. Esto se considera la edad de la viabilidad porque la supervivencia fuera del útero se hace posible para algunos fetos.

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