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The Endowment for Human Development
The Endowment for Human Development
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Comparing Lung Development

9 weeks

From The Biology of Prenatal Development.Buy Now

Label Key:

1. trachea of fetus and adult
2. adult lungs superimposed over fetal lungs
3. vessels and bronchial tree
All ages referenced to fertilization, not last menstrual period.
The 9-Week Fetus via MRI
The 9-Week Fetus via MRI
Fetal Respiratory System
Fetal Respiratory System
Comparing Lung Development
Comparing Lung Development
The 9-Week Fetus in Motion
The 9-Week Fetus in Motion
The Coiled Umbilical Cord
The Coiled Umbilical Cord
The Hands and Umbilical Cord
The Hands and Umbilical Cord


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