Fig. 7From: Difference in virulence between Neisseria meningitidis serogroups W and Y in transgenic miceComparison of number of bacteria adherent to cells 3 h post-infection. Lines represent the mean and 95% confidence intervals. A Mann-Whitney test was used to compare serogroups W and Y. *** indicates the level of the significant difference in adhesion between mice infected with serogroup W isolates compared to serogroup Y infected mice (p = 0.0004)Back to article page