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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
The horizontal fraction bar was introduced by the Arabs.
On average, the stomach produces 2 L of hydrochloric acid per day.
The average office desk has 400 times more bacteria on it than a toilet.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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