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Author Question: At home, when confronted with an approaching tornado, you should:a. open the windows right away. ... (Read 127 times) |
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The human body produces and destroys 15 million blood cells every second.
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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.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.