Gastrula
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The developmental stage that follows BLASTULA or BLASTOCYST. It is characterized by the morphogenetic cell movements including invagination, ingression, and involution. Gastrulation begins with the formation of the PRIMITIVE STREAK, and ends with the formation of three GERM LAYERS, the body plan of the mature organism.
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Subject headings from Medical Subject Headings (MeSH) 2026, courtesy of the U.S. National Library of Medicine. ScieBeta is not affiliated with, nor endorsed by, the NLM or the NIH. Resources are linked from their original providers and open directly from them. Licence and credit are shown alongside every item.