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Adhesion of S. gordonii to salivary pellicles on glass surfaces after 2 h incubation. (a) Wild-type DL1, (b) srtA− mutant of DL1 and (c) complemented mutant (srtA+) were recirculated over saliva-coated glass surfaces for 2 h as described in Methods. (d) The numbers of adherent bacteria were enumerated after staining with the LIVE/DEAD BacLight kit. Bars, 10 μm.
