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On average, the stomach produces 2 L of hydrochloric acid per day.
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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.