FIG. 2.

Percentage of CD4-T-cell migration to in vivo-recovered and in vitro-grown wild-type (WT) and pneumolysin-deficient (PLN-A) pneumococci. CD4 migration to in vivo-recovered pneumococci is represented as dashed columns, and migration to in vitro-grown pneumococci is represented as dotted columns (each experiment was repeated three times, with each sample within one experiment done in triplicate). Data represent the mean of all experiments, with error bars indicating the standard error of the mean.