Figure 3.

Micrographs of single-subspecies F. nucleatum biofilms grown on poly-L-lysine coated Thermanox coverslips. (A) Micrographs showing differences in biofilm architecture. White arrows indicate bacterial aggregates within the biofilm. 1000X magnification, scale bar 20 μm. (B) Micrographs showing cell-to-cell cohesion. White arrow heads indicate presumed water channels. 5000X magnification, scale bar 5 μm. Biofilms from two independent experiments grown in duplicates were imaged and representative micrographs are shown.