#fetus__fetu__foetus  an unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animal
  supertype:  #vertebrate__craniate  animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
  subtype:  #teras  #abortus
  part:  #ductus_arteriosus  a blood vessel in a fetus that bypasses pulmonary circulation by connecting the pulmonary artery directly to the ascending aorta; normally closes at birth
  part:  #umbilical_cord__umbilicalcord  membranous duct connecting the fetus with the placenta
     part:  #umbilical_vein__umbilicalvein__vena_umbilicalis  a vein in the umbilical cord; returns nutrient blood from the placenta to the fetus

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