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The Endowment for Human Development
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Upper and Lower Limbs


3 months

From The Biology of Prenatal Development.Buy Now

Script: À 12 semaines, la longueur des membres supérieurs a presque atteint sa proportion finale à la taille corporelle. Les membres inférieurs prennent plus longtemps pour atteindre leurs proportions définitives.

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