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    2.)  Stevenson, Robert E. Catalogue of Bacteria and Bacteriophages, 18th edition.  American Type Culture Collection, Rockville, 1992.

    3.)  Rice, S.A., Givskov, M., Steinberg, P.  Bacterial Signals and Antagonists:  the Interaction Between Bacteria and Higher Organisms.  Journal of Molecular Microbiology Biotechnology.  1999.  1(1): 23-31.