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ECB-STAGE-15
Name: 2-cell stage
ECAO ID: 0000160 Definition: "An embryo that is composed of two cells and is surrounded by a fertilization envelope. The first cleavage plane took place meridionally (i.e. along the animal-vegetal axis), thereby generating two blastomeres of equal size, each containing both animal and vegetal cytoplasm." |
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Preceded By: 1-cell stage | Succeeded By: 4-cell stage |