Artificial Leech
Another bloodletting device, this time used mainly in eye and ear surgeries.
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The Most Bizarre Medical Tools from Back in the Day
The More You Know
- The glass winged butterfly lacks colored scales, which makes its wings transparent and helps it avoid predators.
- Parts of the Great Wall of China were made with sticky rice.
- Finland has more saunas than cars.
- 12 plants and 5 animals make up 75% of diets around the world.