FIG 7.

In vitro PltC-typhoid toxin-neutralizing activity of candidate human monoclonal antibodies. Neutralizing activity is depicted as a ratio of the number of cells in G₀/G₁ to G₂/M of the cell cycle, as determined by their DNA content measured by flow cytometry. The results of two independent experiments (open and closed bars) are shown. Cells treated with toxin that had been incubated with buffer are indicated as “control.”