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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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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
Hematuria. An analysis of urine is performed to evaluate kidney function. In this illustration, the
In American Progress (1872), John Gast depicts a feminized (and eroticized) America moving westward,
That politics was always a rough business is shown in this cartoon, which shows Lincoln, assisted by
Charting Progress: Weekly Weight Loss Log
Available Fresh Water per year