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Figure 1   Compaction and the formation of the mouse blastocyst. (A,B) 8-cell embryo. (C) 16-cell morula. (D) 32-cell blastocyst. The left side represents the entire organism or its cross section. The right side details the changes associated with the maturation of the trophoblast. (Right-hand figures after Fleming, 1992.)
Figure 1
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