#embolus__embolu  an abnormal particle (e.g. an air bubble or part of a clot) circulating in the blood
  supertype:  #clot__coagulum  a lump of material formed from the content of a liquid
  part of:  #embolism  occlusion of a blood vessel by an embolus (a loose clot or air bubble or other particle)

No statement uses or specializes #embolus; click here to add one.