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Luminescence of luxS mutants in the symbiotic light organ. Animal luminescence was monitored during the initial stages of E. scolopes colonization by V. fischeri wild-type (solid diamonds), ainS mutant (solid squares), luxS mutant (solid triangles), and ainS luxS mutant (solid circles) strains. For each time point, mean values of 24 animals were calculated and standard errors of the mean are indicated. The experiment was repeated with the same outcome.
