Mouse serum anti-CfaE (CFA/I), -CooD (CS1), -CotD (CS2), -CstH (CS3), -CsaE (CS4), -CsfD (CS5), -CssB (CS6), anti-LngA (CS21) and anti-EtpA (EtpA) IgG antibody titers (log10). Solid circles (●) were titers of mice intraperitoneally immunized with the adhesin tip MEFA protein; empty circles (○) were of titers of the control mice. Each circle represented the IgG titer from an individual mouse. Bars indicated the mean titers of the group specific to each adhesin.