_:b254665786 <http://www.w3.org/2002/07/owl#annotatedProperty> <http://purl.obolibrary.org/obo/IAO_0000115> . _:b254665786 <http://www.w3.org/2002/07/owl#annotatedSource> <http://purl.obolibrary.org/obo/FBbt_00000110> . _:b254665786 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#Axiom> . _:b254665786 <http://www.w3.org/2002/07/owl#annotatedTarget> "Primordium that is a primary subdivision of the embryo into regions based on tissue and cell-type fate and specification. Germ layers first become morphologically distinct during gastrulation. As a result of gastrulation, the endoderm becomes the inner-most layer, the mesoderm becomes the middle layer and the ectoderm becomes the outer layer."^^<http://www.w3.org/2001/XMLSchema#string> . _:b254665786 <http://www.geneontology.org/formats/oboInOwl#hasDbXref> "FBC:DOS" .