Fig. 1From: Proarrhythmic risk and determinants of cardiac autonomic dysfunction in collagen-induced arthritis ratsMacroscopic observation of joint swelling in collagen-induced arthritis (CIA) rats. a Normal rats. b Induced arthritis on day 20 of CIA rats. c The severity of arthritis in clinical scoring. d The severity of arthritis in paw thickness. Differences between the control group and the model group were statistically significant (p < 0.05)Back to article page