#prenatal_diagnosis  any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality
  supertype:  #diagnostic_procedure__diagnostic_technique  a procedure followed in making a medical diagnosis
  subtype:  #sonography__ultrasonography  using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth
  subtype:  #amniocentesis__amniocentesi  extraction by centesis of amniotic fluid from a pregnant woman (after the 15th week of pregnancy) to aid in the diagnosis of fetal abnormalities
  subtype:  #fetoscopy__foetoscopy  prenatal diagnosis that allows direct observation of a fetus in the uterus and the withdrawal of fetal blood

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