Virulence

... treatment vs the control. Another use is to put plenty of known genes not necessarily from one organism (such as antibiotic resistance genes, or virulence genes) and to hybridize different wild organisms to test the prevalence of said genes in the wild populations.

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... infections express high levels of the polysaccharide but rapidly lose the ability when cultured in the laboratory. The function of the capsule in virulence is not entirely clear. Although it does impede phagocytosis in the absence of complement, it also impedes colonization of damaged heart valves, ...

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... maximum about 40 days. I would speculate it's because O157:H7 is outcompeted by non pathogenic E. coli which aren't wasting energy maintaining virulence factors and the extra DNA which does for them.

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... HM. Modulation of disease by superantigens. Curr Opin Immunol 1998;10(4):465-70. 118. Soos JM, Schiffenbauer J, Torres BA, et al. Superantigens as virulence factors in autoimmunity and immunodeficiency diseases. Med Hypotheses 1997;48(3):253-59. 119. Johnson HM, Torres BA, Soos JM. Superantigens:structure ...

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... on pathogenic bacteria, so I can tell you a little about yersina pestis, it uses a type III secretory system to infect its host, it has numerous virulence genes, it has many ways of acquiring iron, it has the ability to resist phagocytosis, and opsonization, and it resides in the lymph node areas ...

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