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Attachment of trophoblast to exocoelomic membrane

Fig. 24. Hertig and Rock, 1941.

High-power view of embryo

Fig. 25. Hertig and Rock, 1941.

Part of abembryonic trophoblast

Fig. 26. Hertig and Rock, 1941.

Low-power view

Fig. 28. Hertig and Rock, 1941.

Detail of arteriovenous sinusoid

Fig. 29. Hertig and Rock, 1941.