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Extracellular DNA
DNA secreted by bacteria is important for the formation and maintenance of biofilms.
Email: Jonathan B Weitzman - jonathanweitzman@hotmail.com News from The Scientist 2002, 3(1):20020227-01
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Bacteria can organize into structured communities, called biofilms, that protect them from antibiotics and from immune attack by the host. The biofilms are embedded in a matrix containing a complex mixture of macromolecules including exopolysaccharides and proteins. In the February 22 Science, Cynthia Whitchurch and colleagues reported that extracellular DNA is a major component of the biofilms of Pseudomonas aeruginosa (Science 2002, 295:1487).
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