| 21. | Thereafter, these were compared with purified placental alkaline phosphatase.
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| 22. | Placental mammals evolved a discrete motor cortex about 100 mya.
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| 23. | This is a feature of all non-placental mammals.
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| 24. | The width of the placental folds decreases until day 85 of gestation.
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| 25. | Placental mammals lost both the mid and short wavelength cones.
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| 26. | HLA-G is expressed on fetal derived placental cells.
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| 27. | Synyctin-1 mediated trophoblast fusion is essential for normal placental development.
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| 28. | It can be associated with placental abruption and perhaps with uterine leiomyomas.
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| 29. | Both placentals and marsupials are mostly known from Laurasia during the Cretaceous.
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| 30. | Many starve in the womb, he said, because of placental failures.
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