FIG. 3.

Lymphocyte subpopulations in BAL fluid (A) and BLNs (B) from five foals and five adult horses at 15 days after challenge with virulent R. equi. Five foals and five adult horses were used as uninfected controls. The subpopulations are displayed as a percentage of the total number of gated cells (mean ± SD). Different letters between experimental groups (a, b, c) indicate a statistically significant difference (P < 0.05). The difference is not significant when the bars have at least one letter in common.