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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

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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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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Antoine-Laurent de Lavoisier is considered the "Father of Modern Chemistry". Antoine-Laurent de Lavoisier is considered the "Father of Modern Chemistry".
The asymmetrical appearance of Mira, an oscillating variable star. The asymmetrical appearance of Mira, an oscillating variable star.
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Variable Gases: Ozone Variable Gases: Ozone
How to solve a linear system when the variable is in the denominator position (Question 2 of 2) How to solve a linear system when the variable is in the denominator position (Question 2 of 2)
Variable and absorption costing, explaining operating-income differences. Variable and absorption costing, explaining operating-income differences.
Video: Body plan of euglena Animation

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