FIG. 1.

Bioluminescence growth curves of EC14(pCGLS1.UC) grown in vitro. A series of 10-fold dilutions were measured for bioluminescence using the ICCD camera (A) and the microtiter luminometer (B) from 0 to 7 h. Bioluminescence is reported as PCs for the ICCD camera and relative light units (RLU) for the luminometer. Panels C and D compare bioluminescence reading of the ICCD camera in the presence (D) and absence (C) of lens filters. For panel D, only those bioluminescence readings greater than 6 log units were measured using the lens filters. The values are means plus or minus standard errors (SE) of two independent experiments.