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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

