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5.1 Echinoderm First Cleavage

Explore the fascinating embryonic development stages of sea urchins, from first to third cleavage, ingression of primary mesenchyme cells, and invagination of archenteron. Witness the intricate processes in a vibrant biological context of sea urchin larva skeleton formation.

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5.1 Echinoderm First Cleavage

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  1. 5.1 Echinoderm First Cleavage

  2. 5.2 Echinoderm Second Cleavage

  3. 5.3 Spindles at Fourth (unequal) Cleavage in a Purple Sea Urchin, Strongylocentrotus

  4. 5.4 Normal Sea Urchin Development

  5. 5.5 Sea Urchin Blastula

  6. 5.6 Sea Urchin: Ingression of Primary Mesenchyme Cells

  7. 5.7 Sea Urchin: Ingression of GFP-Labeled Primary Mesenchyme Cells

  8. 5.8 Sea Urchin Larva Skeleton

  9. 5.9 Sea Urchin: Invagination of Archenteron

  10. 5.10 Polar Lobe Formation in the Scaphopod Mollusc Pulsellum

  11. 5.11 Development of the Ascidian Corella

  12. 5.12 Ascidian Embryogenesis

  13. 5.13 C. elegans: Normal Development

  14. 5.14 First Cell Cycle in C. elegans

  15. 5.15 Chromosomes During Fertilization

  16. 5.16 P-Granule Migration in C. elegans: First Division

  17. 5.17 P-Granule Migration in C. elegans: Third Division

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