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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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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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Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Values, both those held by individuals and those that represent a nation or people, can undergo deep ... Values, both those held by individuals and those that represent a nation or people, can undergo deep ...
With tough economic times, a lot of people have lost their jobs—and their homes. If this happens, ... With tough economic times, a lot of people have lost their jobs—and their homes. If this happens, ...
For millions of people, the United States represents a land of opportunity and freedom from ... For millions of people, the United States represents a land of opportunity and freedom from ...
The energy set-point view that is the basis of many people’s thinking about hunger and eating. The energy set-point view that is the basis of many people’s thinking about hunger and eating.
Fetal Alcohol Syndrome Children born with fetal alcohol syndrome often have facial abnormalities Fetal Alcohol Syndrome Children born with fetal alcohol syndrome often have facial abnormalities
Fraction of obese individuals by state in 1998 and 2008. In 1998, 42 states had obesity rates below Fraction of obese individuals by state in 1998 and 2008. In 1998, 42 states had obesity rates below
Video: Apicomplexan life cycle Animation

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