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Summary Stage Literature (1) Attributions Wiki
ECB-STAGE-33

Name: early mesenchyme blastula stage

ECAO ID: 0000340

Definition: "The vegetal plate is apparent and skeletogenic primary mesenchyme cells (PMCs) are in the process of ingression, a type of epithelial–mesenchymal transition (EMT). The epithelial wall of the embryo has thickened at the animal pole, where a tuft of long, non-motile cilia has formed."


Preceded By: late swimming blastula stage Succeeded By: mid-mesenchyme blastula stage