WW2 Tech Advancements

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Across
  1. 4. What weapon was launched onto Hiroshima?
  2. 5. what is an antibody for all cuts?
Down
  1. 1. The process of giving someone blood plasma to keep them alive.
  2. 2. A device to help detect things that you can't see?
  3. 3. A device to do calculation for ballistic trajectories.