has part has part has_part in taxon immediate transformation of mesodermal cell Porifera germ layer mesoderm http://upload.wikimedia.org/wikipedia/commons/e/e8/Mesoderm.png BTO:0000839 CALOHA:TS-0623 EHDAA:124 Wikipedia:Mesoderm EHDAA:160 BILA:0000037 EHDAA:183 TAO:0000041 NCIT:C12750 UBERON:0000926 The middle germ layer of the embryo, between the endoderm and ectoderm. VHOG:0000152 ZFA:0000041 XAO:0000050 MAT:0000174 UMLS:C0025485 uberon GAID:522 FMA:69072 EHDAA2:0001128 SCTID:362854004 MIAA:0000174 EFO:0001981 AAO:0000304 MESH:D008648 EMAPA:16083 EV:0100006 presumptive mesoderm