Karl Landsteiner

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Across
  1. 2. fight against viruses in the body
  2. 3. a toxin or other foreign substance
  3. 4. Blood clots
  4. 6. genetics
  5. 8. Diagnostic Examination of blood serum
  6. 9. doctors who specialize in diseases of the blood and blood components.
Down
  1. 1. discovered the four main blood types
  2. 2. a severe,life-threatening allergic reaction
  3. 5. low levels of this causes tiredness
  4. 7. erythrocytes