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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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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

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

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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

Water Potential, Solute Potential, and Pressure Potential Water Potential, Solute Potential, and Pressure Potential
Effects of Differences in Solute Concentration on the Movement of Water Molecules Effects of Differences in Solute Concentration on the Movement of Water Molecules
An engine will not run if the air–fuel mixture is either too rich or too lean. An engine will not run if the air–fuel mixture is either too rich or too lean.
An oscillating needle 1 or 2 inches Hg below normal could indicate an incorrect air–fuel mixture ... An oscillating needle 1 or 2 inches Hg below normal could indicate an incorrect air–fuel mixture ...
In a homogeneous enzyme immunoassay, antibody bound to the hapten conjugated to the enzyme prevents ... In a homogeneous enzyme immunoassay, antibody bound to the hapten conjugated to the enzyme prevents ...
Different ANA staining patterns and related autoimmune diseases. (a) Homogeneous staining, (b) ... Different ANA staining patterns and related autoimmune diseases. (a) Homogeneous staining, (b) ...
Video: Decubitus Ulcer

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