part_of part of part of existence starts and ends during anatomical entity anatomical entity embryo stage extraembryonic structure EHDAA:46 TGMA:0001843 AEO:0000042 see also conceptus extraembryonic component in EHDAA2. FMA:85537 FBbt:00005835 AAO:0010020 extraembryonic tissue ZFA:0000020 VHOG:0000292 extra-embryonic structure CALOHA:TS-2119 A multicellular anatomical structure that is associated with an embryo and derived from the zygote from which it develops, but which does not contribute to the embryo proper or to structures that are part of the same organism after embryogenesis. BILA:0000042 SCTID:314908006 uberon TAO:0000020 UMLS:C1282438 NCIT:C34055 HAO:0000042 CARO:0000042 UBERON:0000478 EHDAA2:0003042 extraembryonic structures XAO:0004005 developing anatomical structure entire extraembryonic component