Histopathology scores of arthritis severity for B6 and B6 miR-146a^−/− mice.

Histopathology scores of rear ankle joints of B6 and B6 miR-146a−/− mice infected with B. burgdorferi for 4 weeks. Scores of 0–5, with 5 being most severe, were assigned to each sample. Total score is the sum of scores from each category. Values shown are the mean (±SE), and bold numbers indicate statistically significant difference between strains using Mann-Whitney U test (p<0.01), pooled from two independent infection experiments (n = 9–10 each).