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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.