Fig. 31. Heuser,
Rock and Hertig, 1945.
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| Embryo 7802 - Stage 7 | Fig. 31. Heuser,
Rock and Hertig, 1945. |
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| Illustration based on a graphic reconstruction and a model of specimen no. 7802. The primitive node of Hensen is in a very early stage of development and has not yet produced a conspicuous elevation of the germ disk. The allantoic duct consists of a proximal part attached to the yolk sac and a detached bulbous segment. A broad amniotic duct projects from the dorsal apex of the amnion and ends blindly in the chorionic mesoderm. | |
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