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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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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.

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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

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If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Some male birds and mammals congregate in communal courting grounds called leks. Some male birds and mammals congregate in communal courting grounds called leks.
The breeding and wintering grounds of the American redstart, Setophaga ruticilla. The breeding and wintering grounds of the American redstart, Setophaga ruticilla.
Many salmon spawning grounds, such as the Little Qualicum River in British Columbia, consist of wate Many salmon spawning grounds, such as the Little Qualicum River in British Columbia, consist of wate
Examples of Medical Necessity Criteria Examples of Medical Necessity Criteria
Video: Anatomy and Chemical Makeup of a Single Hair (Animation)

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