Gastrula
see also: Etymology of Gastrula
The gastrula is the name given to the Embryon formed by the Gastrulation. It is made of a Blastocèle and a Archentéron which are two cavities formed inside the embryo.
The three layers (ectoderm, mésoderme, endoderm) are formed in the good order at the time of the gastrulation.
The Blastocèle narrows at the time of the gastrulation.
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