anatomical structure acellular anatomical structure AAO:0010268 AEO:0000040 Anatomical structure that consists of cell parts and cell substances and together does not constitute a cell or a tissue. BILA:0000040 CARO:0000040 EHDAA2:0003040 FBbt:00007013 FMA:63863 HAO:0000040 TAO:0000382 TGMA:0001841 UBERON:0000476 XAO:0003162 ZFA:0000382 acellular anatomical structures uberon