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Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
Did you know?
It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
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The human body produces and destroys 15 million blood cells every second.
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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
![Internal view of the heart illustrating the heart chambers, heart layers, and major blood vessels as](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_22_08_851775.jpeg)
![Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones](https://biology-forums.com/gallery/47/medium_12359_26_01_13_3_56_03.png)