| Embryo 7801 - Stage 6 | Fig. 6-10. O'Rahilly
and Muller, Developmental Stages in Human Embryos, 1987. |
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| The embryonic disc of No. 7801, in the region of the primitive streak. the connecting stalk, the amniotic cavity, and the umbilical vesicle are also visible. Section 12-3-6. | ||||
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