Figure 1.

Monospecies biofilm formation of Tannerella forsythia wild‐type and mutant strains. (A) Biofilm formation of T. forsythia ATCC 43037 wild‐type compared with its mutants ATCC 43037 ΔpseC, ΔwecC, ΔtfsAB and the complemented mutant ΔpseC _comp. (B) Biofilm formation of T. forsythia UB4 wild‐type compared with its mutant UB4 ΔlegC and the complemented mutant ΔlegC _comp. Mean values ±SD of four independent experiments with three replicates, each, are shown. Asterisks (**) indicate significant differences between samples as determined by the unpaired Student's t‐test (P≤.01)