part_of part of part of life cycle gastrula stage OGES:000019 FBdv:00005317 RnorDv:0000005 ChirDv:0000011 SscrDv:0000090 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. trilaminar blastocyst stage WBls:0000010 OGES:000004 GgalDv:0000092 trilaminar stage SsalDv:0000016 EFO:0001296 MmusDv:0000013 OariDv:0000026 BILS:0000109 XAO:1000005 HsapDv:0000010 BilaDO:0000008 trilaminar blastoderm stage trilaminar germ stage ZFS:0000047 trilaminar disk stage UBERON:0000109 blastocystis trilaminaris stage developmental stage