Fig. 2. Temporal signal stabilities of firefly and renilla luciferase reporters in planktonic and biofilm cultures of S. mutans, S. gordonii, and S. sanguinis.
Presented here are the average luminescence values (RLU) and standard deviations normalized to the cell density over a 15 min. time course after luciferase substrate addition (n=3). A) planktonic firefly luciferase activity; B) planktonic renilla luciferase activity; C) biofilm firefly luciferase activity; D) biofilm renilla luciferase activity.