Fig. (5) A pathogenic role for JNK1 in passive K/BxN serum transfer arthritis. Clinical arthritis scores and ankle swelling in WT (grey circles, n=15), Jnk1^-/- (black squares, n=15) and Jnk2^-/- mice (black circles, n=8) injected with 150 μl of K/BxN serum on day 0. Jnk1^-/- mice develop less paw swelling than WT or Jnk2^-/- mice. Values are means ± SEM. * =p<0.05 vs WT or Jnk2^-/- mice by two way ANOVA [89].