Fig. 2. Killing of Porphyromonas gingivalis (Pg) and Aggregatibacter actinomycetemcomitans (Aa) by genistein. Bacterial cultures (1×106 CFU/mL) were treated with genistein. After 1 hr, colony counts were determined. Data are means±standard deviation of a representative experiment performed in triplicate. Similar results were obtained in two other independent experiments. (A) P. gingivalis treated with 80 μM genistein and (B) A. actinomycetemcomitans treated with 160 μM genistein. The asterisk indicates significant difference (p<0.05) compared to without genistein.
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