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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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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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Thyroid conditions may make getting pregnant impossible.
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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").
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In 1864, the first barbiturate (barbituric acid) was synthesized.