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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

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The horizontal fraction bar was introduced by the Arabs.

Lab: Learn Orders in Class Insecta Lab: Learn Orders in Class Insecta
Stethoscope with both a bell and flat disc amplifier. Stethoscope with both a bell and flat disc amplifier.
Stressing that education reproduces a country’s social class system, conflict theorists point out ... Stressing that education reproduces a country’s social class system, conflict theorists point out ...
Differences in the antigen-processing pathways between MHC molecules class I and class II. Differences in the antigen-processing pathways between MHC molecules class I and class II.
How to quickly determine the maximum or minimum value of a quadratic equation in standard form How to quickly determine the maximum or minimum value of a quadratic equation in standard form
Growing snails in class room sk Growing snails in class room sk
Video: Protein Secondary and Tertiary Structures - Animation

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