Association between IgG4 Autoantibody and Complement Abnormalities in Systemic Lupus Erythematosus

Figure 1

Comparison of serum levels of anti-nuclear IgG4 in various groups. Detection of serum levels of anti-nuclear IgG4 in the serum of normals and SLE and RA patients was conducted using a molecular biology kit as described in Section 2 (normal = 41, SLE = 72, and RA = 67; ).