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Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Video: Power Supply Polyacrylamide Gel Protein Sample

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