part_of part of part of preceded by preceded by preceded_by simultaneous_with simultaneous with only in taxon only_in_taxon occurrent neural tube formation Eumetazoa embryo stage life cycle stage gastrula stage neurula stage https://github.com/obophenotype/uberon/issues/343 BilaDO:0000009 MmusDv:0000017 BILS:0000110 XAO:1000006 HsapDv:0000012 uberon Staged defined by the formation of a tube from the flat layer of ectodermal cells known as the neural plate. This will give rise to the central nervous system. UBERON:0000110