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Did you know?

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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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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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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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Aneurysm. Photograph of the aorta, the large blood vessel arising from the heart, with a large bulge Aneurysm. Photograph of the aorta, the large blood vessel arising from the heart, with a large bulge
Neurohumoral effects of heart failure Neurohumoral effects of heart failure
Drugs That May Worsen Heart Failure Drugs That May Worsen Heart Failure
Major veins of the body. Apply deep flushing effleurage to the arms and legs from distal to ... Major veins of the body. Apply deep flushing effleurage to the arms and legs from distal to ...
Warfarin An anticoagulant drug given to prevent blood from clotting Warfarin An anticoagulant drug given to prevent blood from clotting
Development of the Heart Development of the Heart
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