FIG. 2.

Accumulation of inflammatory cells in the middle ears of rats following transbullar inoculation of transparent or opaque variants of S. pneumoniae. Each data point represents the mean concentration of inflammatory cells (± SEM) per milliliter of middle ear lavage fluid. These results are from a single experiment, with a total of four to eight middle ear lavage samples obtained from two to four animals for each cohort (opaque and transparent), at each time point. *, P < 0.05 for the comparison (opaque versus transparent).