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Experiment shows how fast germs can spread
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How fast do germs spread? Faster than you think.
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Experiment shows how fast germs can spread
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Science experiment for kids to show how fast germs spread, explain washing hands
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Video Extra: Experiment shows how germs can spread
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Experiment on germs and washing of hands | The Straits Times
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West Michigan doctor shows how quickly germs spread
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See Germs! Hand Washing Science Experiment
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Experiment shows disgusting bacteria harboured by hand dryers
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