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Author Question: Acquired immunity is so-called because the mechanisms "learn" and change each time they are engaged. (Read 21 times) |
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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There are approximately 3 million unintended pregnancies in the United States each year.
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Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The average adult has about 21 square feet of skin.