Gastrulation
Gastrulation. It is not birth, marriage or death, but gastrulation, which is truly the most important event in your life Lewis Wolpert. 17 hours in the life of a zebrafish embryo. Blastula Stages. 4-cell. 8-cell. 32-cell. 1- cell. 2-cell. 512-cell. 1000-cell. sphere. 30% epiboly.
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