Figure 2. mAb blocking of Type I IFN signaling prevents the Bbaa1 dependent increase in arthritis in B. burgdorferi infected mice.
B6.C3-Bbaa1 mice were treated with 2.5 mg MAR1-5A3 blocking mAb or isotype control the day before infection. Congenic and parental B6 and C3H mice were infected with B. burgdorferi and arthritis severity analyzed at 4 wks. of infection, shown for (A) Change in ankle measurement and (B) Overall lesion score. Statistical significance was determined by Student’s t-test for ankle swelling while the Mann Whitney U test was used for Overall lesion. n=5 per group.