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Animation 1:
Animation 2:

Rotation of the embryonic disc (green). The amnion has been removed from the dorsal surface of the disc. The only part of the secondary umbilical vesicle (yolk sac) shown is that part directly beneath the disc (pink)

Animation of the model with the amnion and yolk sac intact. The amnion fades to reveal the embryonic disc.

In addition to these animations that were made from the WinSurf reconstructions, we are also providing the original WinSurf files together with a WinSurf Viewer. Models displayed in the Viewer can be rotated about all three axes, users can zoom in and out, and models can be translated. Also, the color and opacity of different objects in the models can be varied.

Download Winsurf Data Files and Viewer

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Stage 3