Representative images.

<p>Representative images of mature homotypic and polymicrobial biofilms involving <i>P. gingivalis</i>, <i>T. denticola</i> and <i>T. forsythia</i>. Biofilm images were taken 90 h after inoculation of a flow cell. (a) <i>P. gingivalis</i> homotypic biofilm (b) <i>T. denticola</i> homotypic biofilm (c) Polymicrobial biofilms. Bacterial cells were stained with species-specific FISH probes (red, <i>T. denticola</i>; green, <i>P. gingivalis</i>). 3D CSLM images are on the left and SEM images are on the right.