Fig. 3

Flow cytometric analysis of neutralization and adherence inhibition assay using ME-180 cells, and ME-180 cells infected with CFSE-stained N. gonorrhoeae (Ng) with and without incubation with serum antibodies. CFSE-stained Ng was preincubated with heat inactivated negative (1:10 and 1:20 dilutions) and positive hyperimmune serum (1:10 to 1:80 dilutions). Infected ME-180 cells were washed three times with PBS to remove loosely adherent CFSE-stained Ng