Fig 5.

(A) Luciferase expression pattern and growth curve of S. gordonii DL1 and Δhsa mutant. The growth of 2 strains was measured every 2 hours and at OD₆₀₀ nm, and luciferase expression (relative light unit, RLU) was normalized by growth curve (OD₆₀₀). (B) Luciferase expression pattern of S. gordonii DL1 and Δhsa mutant mixed with V. atypica OK5. CFU (colony-forming unit) was measured every 2 hours and utilized to normalize RLU. 1000 RLU/CFU was shown in Y-axis. Sg: S. gordonii DL1; OK5: V. atypica OK5. The results are shown as the means ± SD of three independent experiments.