The Doctors reveal which body parts you can live without and why you still need to take care of them.
Replacing Body Parts
A patient recently became the first to receive a synthetic organ when a lab-made trachea was implanted in a 36-year-old man. The Doctors discuss the progress that has been made using stem cells to grow replacement body parts and the possibilities for the future.
Body Parts You Can Live Without
Pediatrician Dr. Jim Sears hits the streets of Los Angeles to find out if people know what different body parts are for — and whether you can live without them.
Useful or Useless?
The Doctors put your body knowledge to the test. Take The Doctors' quiz: Are the following body parts useful or useless?
When Nonessential Organs Are Dangerous to Your Health
When to Get It Removed
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