Figure 4: Direct cytotoxicity effect of OmpK36 and whole bacteria (NVT-1002 andΔOmpK36) in hepatoma cells HepG2. HepG2 cells were treated with (a) variant concentrations of recombinant OmpK36 for 24 hours and (b) bacteria NVT-1002 orΔOmpK36. Viability was detected by MTS method. There was no significant difference in cell viability. The value was mean ± standard error of mean (SEM), n=5.