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Extracellular microvesicles and a highly proteinaceous polymer associated with a leukotoxin-producing strain, Actinobacillus actinomycetemcomitans SUNY 75, were shown to increase adherence of other weakly adherent A. actinomycetemcomitans strains to KB epithelial cells.
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Meyer et al. (1993) studied this question.
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