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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Active and passive immunity Active and passive immunity
Purse cover, from the Sutton Hoo burial ship. Purse cover, from the Sutton Hoo burial ship.
Active Compared with Passive Voice Active Compared with Passive Voice
Mechanisms of Active and Passive Immunity Mechanisms of Active and Passive Immunity
Mechanisms of active and passive immunity. Mechanisms of active and passive immunity.
Passive movement of the hip through its full range. With one hand just above the knee and the other ... Passive movement of the hip through its full range. With one hand just above the knee and the other ...
Video: Corpus Callosum Animation

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