Fig. 26. Heuser,
Rock and Hertig, 1945.
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| Embryo 7802 - Stage 7 | Fig. 26. Heuser,
Rock and Hertig, 1945. |
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| This section passes through the middle of the amniotic duct (Amn. D.). The distal end wall of the duct is thickened and contains a small isolated lumen. A cyst lying in the ventral wall of the yolk sac is probably an evagination of the primitive endoderm. It appears in adjoining sections and is connected to the endoderm by a strand of cells. Section 409. | |
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