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Chorionic villus primordium from the embryonic pole of the ovum
Fig. 30. Hertig and Rock, 1941.
Part of the trophoblast from the lateral aspect of the ovum
Fig. 31. Heritg and Rock, 1941.
Section of the lateral aspect of the trophoblast with the arteriovenous sinusoid and capillary branch
Fig. 32. Hertig and Rock, 1941.
Part of the lateral aspect of the ovum showing a forming syncytiotrophoblastic vaculoe
Fig. 33. Hertig and Rock, 1941.
General view of specimen, showing the inner features of the ovum and the surrounding glands and sinusoids of the implantation site
Fig. 36. Hertig and Rock, 1941.
Surface view of implantation site
Fig. 10. O'Rahilly and Müller, 1987.
Side view of implantation site
Fig. 11. O'Rahilly and Müller, 1987.
View of implantation site as seen in the cleared celloidin block
Fig. 12. O'Rahilly and Müller, 1987.