After the blastocyst reached the fully expanded stage (a), the blastocoel cavity suddenly collapsed and a break in the ZP at 1 o’clock (b,c). The blastocyst then escaped from the site of the break in the ZP (d-h).
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| Figure 12: Inward pattern
After the blastocyst reached the fully expanded stage (a), the blastocoel cavity suddenly collapsed and a break in the ZP at 1 o’clock (b,c). The blastocyst then escaped from the site of the break in the ZP (d-h). |
