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Did you know?

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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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Horses require room to exercise Horses require room to exercise
True-color image of layers of haze in Titan's atmosphere. True-color image of layers of haze in Titan's atmosphere.
False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth. False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth.
In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai
Apply L strokes, using flat fingers, from temples to edge of mandible. Stretch is forward toward the ... Apply L strokes, using flat fingers, from temples to edge of mandible. Stretch is forward toward the ...
Binomial-probability calculation of seed-color phenotype in six-seeded pods Binomial-probability calculation of seed-color phenotype in six-seeded pods
Video: Stroke volume - contractility definition

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