immaterial entity immaterial anatomical entity EHDAA2:0003007 VHOG:0001727 immaterial physical anatomical entity HAO:0000007 AAO:0010265 BILA:0000007 CARO:0000007 AEO:0000007 Anatomical entity that has no mass. TGMA:0001827 FMA:67112 TAO:0001835 anatomical entity