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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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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Why are some of the letters above the red line and some letters below? Why are some of the letters above the red line and some letters below?
Johannes Gutenberg, Page from the Forty-Two-Line Bible, Mainz. Johannes Gutenberg, Page from the Forty-Two-Line Bible, Mainz.
Optical and Radiation Pyrometry Experiment Optical and Radiation Pyrometry Experiment
A mechanical returnless fuel system. The bypass regulator in the fuel tank controls fuel line ... A mechanical returnless fuel system. The bypass regulator in the fuel tank controls fuel line ...
Gently squeeze the tissues along the eyebrow line between your thumb and forefinger. Begin at the ... Gently squeeze the tissues along the eyebrow line between your thumb and forefinger. Begin at the ...
Psychology experiment Psychology experiment
Video: baroreceptors

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