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Distribution of bioluminescent Y. enterocolitica B94 on Camembert cheese directly after contamination (A), after 2 days (B), and after 3 days (C). The initial contamination level was 5 × 103 CFU/cm2. Measurement and storage were at 10°C. The total photon count of the cheese surface with a diameter of 6.5 cm is shown over each image. The scale bar on the right indicates light intensity (red is high, and blue is low).
