Figure 2From: A suite of recombinant luminescent bacterial strains for the quantification of bioavailable heavy metals and toxicity testingToxicity of heavy metals for constitutively luminescent control strains. Toxicity of heavy metals is expressed as inhibition of bioluminescence or decrease in normalized luminescence after 2 hours incubation. Names of strains and symbols for heavy metals are indicated. Data represent mean ± SD of three independent measurements. 2-h EC50 values calculated from these curves are presented in Tables 1-4.Back to article page