Fig. 6. Stage 3 embryo in vitro in final cavitation. The blastocystic cavity occupies approximately 50% of the embryo's volume. Increase in overall size of the blastocyst has not yet occured. The blastomeres are separated into an inner cell mass and a trophoblast group.
(From: Veeck and Zaninovic´, 2003. Reproduced with permission of the publisher, Francis and Taylor Group.)
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