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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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The horizontal fraction bar was introduced by the Arabs.
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There are more sensory neurons in the tongue than in any other part of the body.
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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.