Did you know?
Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.
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The longest a person has survived after a heart transplant is 24 years.
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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
The life cycle of a typical fern.
A typical pedestal grinder with a wire wheel on the left side and a stone wheel on the right side. ...
A typical engine-driven cooling fan.
Cross section of a typical port fuel-injection nozzle assembly. These injectors are serviced as an ...
Some typical electroencephalograms and their psychological correlates
The course of EEG stages during a typical night’s sleep and the relation of emergent stage 1 EEG ...