Figure 4

Changing housing conditions affects the development of spontaneous arthritis in DBA/1 mice. Cumulative incidence (A) and clinical severity (B) of arthritis in male DBA/1 mice before (black line) and after (dotted line) changing environmental factors in the animal facility. (B) Data are shown as mean + SEM; n = 32 in both groups until week 17; n = 23 and 12 from week 18 until end in the ‘after’ and ‘before’ group respectively).