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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

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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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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Operant conditioning, also known as trial-and-error learning. Operant conditioning, also known as trial-and-error learning.
Grieving behavior can have common expressions in different cultures. Grieving behavior can have common expressions in different cultures.
Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery
An Operant Chamber An Operant Chamber
The activity recorded by PET scans during the performance of newly learned and well-practiced ... The activity recorded by PET scans during the performance of newly learned and well-practiced ...
Psychology for Living: Adjustment, Growth, and Behavior Today 11th Psychology for Living: Adjustment, Growth, and Behavior Today 11th
Video: Molecules, Membrane Permeability and Structure

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