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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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There are more nerve cells in one human brain than there are stars in the Milky Way.