Fig 4. Role of GGT and urease in VacA-mediated vacuolation.
AGS cells were co-cultured with WT, Δggt, ΔvacA, ΔureAB or ΔureAB/ggt at MOI 1:100 for 24 hours. Vacuolating activity was measured using neutral red dye uptake assay. Experiments were performed in triplicates and values represent the means ± SD from 3 independent experiments. *P<0.05.