Kinetics of association (adhesion or internalization) of Streptococcus pneumoniae with Schwann cells (SCs). The percentage of SCs containing adhered or internalized S. pneumoniae was quantified at different times up to 24 h. The graph shows a progressive decrease in the number of S. pneumoniae associated with the SCs. These data are representative of three separate experiments, each of which was conducted in triplicate. ***P <0.0001. For statistical analysis, we used Two-way ANOVA and Tukey’s Multiple Comparison Test.