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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.