Neural Tube Defect
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High Quality Content by WIKIPEDIA articles! Neural tube defects (NTDs) are one of the most common birth defects, occurring in approximately one in 1,000 live births in the United States. An NTD is an opening in the spinal cord or brain that occurs very early in human development. In about the 3rd or 4th weeks of pregnancy, specialized cells on the dorsal side of the fetus begin to fuse and form the neural tube. When the neural tube does not close completely, an NTD develops. There are two types of NTDs: open, which are more common, and closed. Open NTDs occur when the brain and/or spinal cord…mehr

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High Quality Content by WIKIPEDIA articles! Neural tube defects (NTDs) are one of the most common birth defects, occurring in approximately one in 1,000 live births in the United States. An NTD is an opening in the spinal cord or brain that occurs very early in human development. In about the 3rd or 4th weeks of pregnancy, specialized cells on the dorsal side of the fetus begin to fuse and form the neural tube. When the neural tube does not close completely, an NTD develops. There are two types of NTDs: open, which are more common, and closed. Open NTDs occur when the brain and/or spinal cord are exposed at birth through a defect in the skull or vertebrae (back bones).