FIG. 2.

Assessment of pathology in ankle joints of control C3H (wt) and C3H IL-10^−/− (IL-10 ko) mice 21 days after infection with B. burgdorferi. (A) Arthritis severity scores were assigned by two independent, blinded observers. The data are pooled means plus standard errors from two separate experiments; n = 10. The asterisk indicates that the IL-10 ko value is significantly different from the wt value at the P < 0.001 level. (B) Representative examples of H&E-stained histological sections from C3H wt and IL-10 ko mice. Magnification, ×100.