genetics

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Across
  1. 2. A test using amniotic fluid for genetic disorders.
  2. 4. A first-trimester test where placental tissue is sampled.
  3. 5. A maternal blood test screening for neural tube defects.
Down
  1. 1. A second-trimester screening for four substances in blood.
  2. 3. First-trimester ultrasound measurement.