Figure 4

The survival of rec BD fusion strains after exposure to UV is similar to wild type. Strains are transformants of V2831 containing rec BD fusion alleles on a plasmid. Cultures were grown to mid log phase at 37°C in LB broth, exposed to UV radiation for 0, 5, 10 and 15 s, and plated on LB agar. Survival is defined as the fraction of initial colony forming units surviving after UV exposure.