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. 2020 Feb 25;10:3411. doi: 10.1038/s41598-020-60459-8

Figure 1.

Figure 1

Qualitative evaluation of DUV LED inactivation of E. coli and L. innocua on TSA agar plates, which mimic nutrient-rich surfaces. (a) Schematic flow chart of the experimental steps. (b) Photos of the agar plates after 24 h incubation, showing the differential growth patterns of bacteria streaks with and without exposure to DUV LEDs. The agar area below the black dashed line was protected from exposure to DUV.