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The familiar sounds of your heart are made by the heart's valves as they open and close.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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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.