TABLE 4.
Biofilm formation with parent and engineered strains of P. gingivalis and S. gordonii
| Biofilm pair | Mean no. of biofilm coloniesa ± SD |
|---|---|
| P. gingivalis 33277, S. gordonii DL1 | 72 ± 12 |
| P. gingivalis 33277, S. gordonii 1.1L | 64 ± 9 |
| P. gingivalis PLM1, S. gordonii DL1 | 67 ± 11 |
| P. gingivalis PLM1, S. gordonii 1.1L | 0 |
| P. gingivalis PLM1, S. gordonii 1.1LC | 52 ± 4 |
| P. gingivalis 33277, S. gordonii 1.1LC | 47 ± 9 |
a
Number for P. gingivalis microcolonies greater than 10 μm in depth that formed on an area of 0.5 cm2 of the streptococcal substratum (n = 6).