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Leeches have been used on thousands of patients that have had a finger or toe cut off and have had it reattached. The use of leeches has helped to prevent blood clotting so the blood vessels have a chance to regrow. In the following paragraphs I will try to persuade you that the use of leeches could be a very important tool for future medical procedures. Leeches are bloodsucking worms that are in the same large classification of earthworms and some oceanic worms. Leeches are found in freshwater lakes, p