Across
- 1. made sanitation systems
- 4. made the first stethoscope
- 9. used acupuncture
- 10. prevented any scientific advancement
- 11. made polio vaccine
- 12. made bifocals
Down
- 2. staff and serpent symbol of medicine
- 3. 1st to observe human body
- 5. improved blood flow to dying tissue
- 6. left the heart in the bodies of the deceased
- 7. weaken bacteria or virus and build immunity
- 8. made x-rays