Term Name:	gastrula stage
Synonyms:	blastocystis trilaminaris stage, trilaminar blastocyst stage, trilaminar blastoderm stage, trilaminar disk stage, trilaminar germ stage, trilaminar stage
Definition:	A stage defined by complex and coordinated series of cellular movements that occurs at the end of cleavage during embryonic development of most animals. The details of gastrulation vary from species to species, but usually result in the formation of the three primary germ layers, ectoderm, mesoderm and endoderm.
Ontology:	Uberon Ontology [UBERON:0000109]