part_of part of part of adjacent to adjacent to adjacent_to existence starts and ends during embryo stage multi-tissue structure embryonic structure conceptus entire extraembryonic component uberon extra-embryonic component extraembryonic component EMAPA:16042 EHDAA2:0000003 AEO:0000195 The part of the conceptus that may be lost before birth or will be discarded at birth, or when the embryo becomes an independent organism. UBERON:0016887