Antoni van Leeuwenhoek
A drawing of Antoni van Leeuwenhoek, one of the first scientists to use a microscope and identify microbes.
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"Antoni van Leeuwenhoek (by Jan Verkolje, 1686)."
http://commons.wikimedia.org/wiki/File:Antoni_van_Leeuwenhoek_(by_Jan_Verkolje,_1686).jpg
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