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Did you know?
Your heart beats over 36 million times a year.
Did you know?
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The longest a person has survived after a heart transplant is 24 years.