existence starts during immediate transformation of gastrula stage paraxial mesoderm EFO:0003515 The paraxial mesoderm is the mesoderm located bilaterally adjacent to the notochord and neural tube[GO]. NCIT:C34244 XAO:0000259 ZFA:0000255 paraxial mesenchyme FMA:293145 TAO:0000255 AAO:0010568 mesoderma paraxiale somitic mesoderm EMAPA:16183 Wikipedia:Paraxial_mesoderm VHOG:0000114 SCTID:361475002 EMAPA:16751 embryonic tissue presumptive paraxial mesoderm dense mesenchyme tissue lateral structure