Medicine through time

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Across
  1. 7. who invented the smallpox vaccine
  2. 8. yellow gas used in ww1
  3. 9. who developed the theory of the four humours
  4. 11. who wrote fabric of the human body
  5. 12. who made the theory of opposites
Down
  1. 1. developed germ theory
  2. 2. what was discovered during the renaissance that allowed people to see small microbes
  3. 3. watson and crick developed the model of ...
  4. 4. ... helmet developed in ww1
  5. 5. james simpson developed these
  6. 6. also known as black death
  7. 8. bad smells that caused disease
  8. 10. people who would whip themselves for their sins