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| Immature infant brain |
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| Immature infant brain
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•Lateral view of the brain from an 18 to 20 week gestation fetus.
•The brain has no convolutions at this age.
•The first convolutions, the central, parietal-occipital,
and calcarine are present by 21 weeks gestation.
| | (Description By:Margaret Grunnet,M.D. )
| | (Image Contrib. by: UCHC )
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