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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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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.
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The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.
Jane Addams (1860–1935), a recipient of the Nobel Prize for Peace, worked on behalf of poor ...
Structure of a typical neuron.
Cutaway view of a typical alternator.
Typical port fuel-injection system, indicating the location of various components. Notice that the ...
A typical reaction in which NAD+ acts as an oxidizing agent
Poor ventilation of oceans