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The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
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Slideshow: Entire Image Gallery by EHD

Investigating the Thumbs

#202, Slide 280 of 312

5 months, 1 week

From The Biology of Prenatal Development.Buy Now

Label Key:

1. forehead
2. nose
3. left eye
4. left thumb
5. left forearm
All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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