Term Name:	Spemann organizer formation at the anterior end of the primitive streak
Synonyms:	Spemann organizer formation in amniotes, Spemann's organizer formation at the anterior end of the primitive streak, Spemann-Mangold organizer formation at the anterior end of the primitive streak
Definition:	Formation of the specialized region at the anterior end of the primitive streak of the embryo that acts as the main signaling center establishing the body plan.
Ontology:	GO: Biological Process [GO:0060064]    QuickGO    AmiGO