TABLE 1.

Comparative characteristics of parental and bioluminescent derivatives.

StrainIn vitro doubling time (min)Biofilm formation on microtiter platesaLD 50 (CFU)
S. aureus
    Parent230.8 ± 0.21.6 × 10 8
    lux mutant241.3 ± 0.39.9 × 10 7
P. aeruginosa
    Parent251.2 ± 0.51.5 × 10 6
    lux mutant251.7 ± 0.66.8 × 10 5
  • a Results are means ± standard deviations.