| 11. | The mesoderm at either side of the neural tube is called paraxial mesoderm.
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| 12. | Probably a lot of toxicants at high doses will cause neural tube defects.
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| 13. | Sonic hedgehog from the neural tube acts at this enhancer to activate it.
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| 14. | For a short time, the neural tube is open both cranially and caudally.
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| 15. | In 1960, experts first linked folate deficiency to neural tube defects.
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| 16. | Of these pregnancies, 81 resulted in infants with neural tube defects.
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| 17. | Maternal folic acid intake around the time of conception prevents neural tube defects.
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| 18. | The notochord plays an integral role in the development of the neural tube.
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| 19. | Neural tube defects have been linked, in laboratory animals, to arsenic, Larsen said.
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| 20. | The somites appear on both sides of the neural tube simultaneously.
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