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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.