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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
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There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.
An example showing a modification that has occurred as a result of biological evolution
Rates of water loss by two turtles and a tortoise indicate an inverse relationship between the dryne
Audiometry. The child in this photograph is undergoing a hearing test with an audiologist.
The strange situation. The Strange Situation features a series of episodes in which (a) the mother l
How We Localize Sound
In Canada, disease-related deaths become increasingly common during middle adulthood