Investigate the effect of external and internal radiation on the human body, radiation sickness

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Across
  1. 4. Dangerous radiation from nuclear accidents
  2. 6. A common source of internal radiation
  3. 8. A medical use of controlled radiation
  4. 9. Cell damage can lead to this disease
  5. 11. Weakest penetrating radiation
  6. 12. Ionizing radiation can destroy this molecule
  7. 13. Protective structure against radiation
  8. 16. A device to measure radiation exposure
  9. 17. Caused by high doses of radiation
Down
  1. 1. Radiation can cause this to blood cells
  2. 2. Unit measuring radiation dose
  3. 3. Time between exposure and symptoms
  4. 5. Radiation from outside the body
  5. 7. The most penetrating type of radiation
  6. 10. Common radioactive gas
  7. 14. Radioactive material inside the body
  8. 15. Type of particles emitted by radioactive materials