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QuickTime Video
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Movie 1
A dorsal view of three neurulating Xenopus embryos (stage 16-21). The left embryo is expressing Xdd1 and fails to close its tube (open-NT). The middle embryo is also expressing Xdd1 but successfully closes its neural tube (closed-NT). The right embryo is an uninjected control.
QuickTime Video
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Movie 2
A dorsal view of two neurulating Xenopus embryos (stage 14-22). The upper embryo is an uninjected control. The lower embryo is expressing Xdsh-D2 and fails to close its neural tube (open-NT).
QuickTime Video
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Movie 3
A higher magnification dorsal view of a neurulating control embryo from stage 16-21.
QuickTime Video
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Movie 4
A higher magnification dorsal view of an Xdd1 open-NT embryo from stage 16-21. Note the robust medially directed movement of surface cells, similar to that seen in controls (see Movie 3).
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Movie 5
Four embryos followed though gastrulation and neurulation (stage 11.5-22.0). Gastrula stages are seen from the vegetal view. As neurulation begins, the embryos are shifted to present a dorsal view. Top left embryo is an Xdd1-injected open-NT embryo. Lower left is an uninjected control. Right embryos are Xdd1 closed-NT embryos.
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