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Front Biosci. 2004 Sep 1;9:3399-433.

Virulence factors of the group A streptococci and genes that regulate their expression.

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Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529-0266, USA.


Group A streptococci produce a wide variety of extracellular (cell-associated and released) virulence factors. The function of these factors varies and includes roles in adhesion, spreading, tissue destruction, immune system evasion, and cell toxicity. How these factors are regulated with regard to one another is important for this organism s ability to bring about the variety of diseases this microbe is capable of causing. Therefore, along with the multitude of virulence factors, there are a number of regulatory systems that regulate, either directly or indirectly, the production of these factors and therefore influence the pathogenesis of group A streptococcal infections.

[Indexed for MEDLINE]

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