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Chapter 15 : Yeasts
Category: Clinical Microbiology
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Yeasts represent one of the growth forms of fungi. They are unicellular, and reproduce mostly by budding or less often by fission. Most medically important yeasts originate from the division of Ascomycota or from the division of Basidiomycota. A simple biochemical reaction, the urease test, can usually distinguish the yeasts from each of the divisions. Ascomycetous yeasts are usually urease negative, whereas basidiomycetous yeasts are urease positive.