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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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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
![In this 1900 cartoon, oil baron John D. Rockefeller holds the White House in the palm of his hand wh](https://biology-forums.com/gallery/47/medium_27_24_08_15_1_27_04_223931107.jpeg)
![The Masses, a leading Socialist magazine, featured drawings by artists, including John Sloan, as wel](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_19_26_224531623.jpeg)