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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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On average, the stomach produces 2 L of hydrochloric acid per day.

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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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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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The ear. Lateral view of the ear region on one side of the head. The ear. Lateral view of the ear region on one side of the head.
Sample inventory order form. Sample inventory order form.
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Medial view of tracts revealed by removing gray matter from a midsagittal section Medial view of tracts revealed by removing gray matter from a midsagittal section
Video: Chromosome structural organization/ Mechanisms for chromosome movement Animation

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