THE VIRTUAL EDGE: Lab 4 Bacterial Staining Techniques III |
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Capsule StainMany bacteria are surrounded by a slimy layer called a capsule that usually consists of a highly hydrated layer of polysaccharide or in a few cases polypeptide. The capsule can have a number of different functions, helping bacteria escape phagocytic white blood cells, protecting against bacteriophage infection, dehydration or facilitating the adherence of bacteria to surfaces. Staining of the capsule requires that the cells NOT be heat-fixed, since any exposure to heat destroys the capsule. |
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Lab 4 / Endospore Stain / Capsule Stain / Lab 4 Organisms Please take a few minutes to fill out a brief survey about your experience using the Virtual Edge: https://uwacadweb.uwyo.edu/MOLB_SURVEY/ Please email comments/problems to cboggs@uwyo.edu |
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Rachel Watson, M.S. |
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