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The Endowment for Human Development
The Endowment for Human Development
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4D Ultrasound


3 months, 1 week

Source: CREATE Fertility, London, UK.
All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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4D Ultrasound
4D Ultrasound
Responds to Touch
Responds to Touch
4D Ultrasound
4D Ultrasound
Gender Differences
Gender Differences
Tooth Development Begins
Tooth Development Begins
Blood Cells and Bone Marrow
Blood Cells and Bone Marrow
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