Cleavage

Spatial distribution of cells

  • <p><strong>Diagram 3</strong></p><p>Diagram showing the dividing planes of the second mitotic cleavage, where one cell cleaves equatorially and one cell cleaves meridionally, giving rise to four daughter cells with different polarity.</p>

    Diagram 3

    Diagram showing the dividing planes of the second mitotic cleavage, where one cell cleaves equatorially and one cell cleaves meridionally, giving rise to four daughter cells with different polarity.

  • <p><strong>Figure 281</strong></p><p>A 4-cell embryo with a typical pyramidal or tetrahedral structure. The embryo was generated by IVF and was transferred and implanted.</p>

    Figure 281

    A 4-cell embryo with a typical pyramidal or tetrahedral structure. The embryo was generated by IVF and was transferred and implanted.

  • <p><strong>Figure 282</strong></p><p>A 4-cell embryo with a typical pyramidal or tetrahedral structure. The embryo was generated by IVF and was transferred but failed to implant.</p>

    Figure 282

    A 4-cell embryo with a typical pyramidal or tetrahedral structure. The embryo was generated by IVF and was transferred but failed to implant.

  • <p><strong>Figure 283</strong></p><p>A 4-cell embryo with a non-tetrahedral or clover structure. It was generated by ICSI and was cryopreserved.</p>

    Figure 283

    A 4-cell embryo with a non-tetrahedral or clover structure. It was generated by ICSI and was cryopreserved.

  • <p><strong>Figure 284</strong></p><p>A 4-cell embryo generated by ICSI with a non-tetrahedral or clover structure. It was transferred but failed to implant.</p>

    Figure 284

    A 4-cell embryo generated by ICSI with a non-tetrahedral or clover structure. It was transferred but failed to implant.

  • <p><strong>Figure 285</strong></p><p>A clover-shaped 4-cell embryo with an expanded ZP. The relative size of the blastomeres with respect to the ZP is smaller than usual in this embryo.</p>

    Figure 285

    A clover-shaped 4-cell embryo with an expanded ZP. The relative size of the blastomeres with respect to the ZP is smaller than usual in this embryo.

  • <p><strong>Figure 286</strong></p><p>A double clover-shaped 8-cell embryo. The clover shape of the 4-cell embryo was maintained in the subsequent division.</p>

    Figure 286

    A double clover-shaped 8-cell embryo. The clover shape of the 4-cell embryo was maintained in the subsequent division.

  • <p><strong>Figure 287</strong></p><p>An ovoid embryo showing four blastomeres arranged in a clover shape.</p>

    Figure 287

    An ovoid embryo showing four blastomeres arranged in a clover shape.

  • <p><strong>Figure 288</strong></p><p id=A 7-cell, ovoid embryo showing blastomeres predominantly arranged in the one spatial plane. The ZP is septate.

    " width="556" height="346" />

    Figure 288

    A 7-cell, ovoid embryo showing blastomeres predominantly arranged in the one spatial plane. The ZP is septate.

  • <p><strong>Figure 289</strong></p><p>An ovoid embryo showing eight blastomeres arranged in one spatial plane.</p>

    Figure 289

    An ovoid embryo showing eight blastomeres arranged in one spatial plane.

  • <p><strong>Figure 290</strong></p><p>An ovoid embryo showing seven blastomeres arranged in one spatial plane. The ZP has an irregular shape.</p>

    Figure 290

    An ovoid embryo showing seven blastomeres arranged in one spatial plane. The ZP has an irregular shape.