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The Body works--respiration
Dr. Timothy Johnson and his three young assistants use a variety of experiments to show how the human respiration system works. Dr. Johnson shows how physicians examine the lungs, and he warns viewers about the dangers of smoking.
- "Dr. Timothy Johnson and his three young assistants use a variety of experiments to show how the human respiration system works. Dr. Johnson shows how physicians examine the lungs, and he warns viewers about the dangers of smoking."@en
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- "The Body works--respiration"@en