Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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There are 20 feet of blood vessels in each square inch of human skin.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.
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How to solve word problems with two unknowns (Question 3)
How to solve word problems with two unknowns (Question 4)
