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The horizontal fraction bar was introduced by the Arabs.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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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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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.
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In 1864, the first barbiturate (barbituric acid) was synthesized.