Figure 1

Effects in mice of treatment with interleukin-4 or control ondisease activity, cartilage damage and bone destruction. Mice were treatedintraperitoneally for 7 days with either vehicle (control) or 1 μg/dayinterleukin-4 (IL-4). CIA, collagen-induced arthritis. *P< 0.05, versus control, by Mann-Whitney U test.