Fig. 3From: IgG subclasses in cryoglobulins: link to composition and clinical manifestationsSubclass proportion of type II and type III CG for patients with low complement C4 fraction (C4 ≤ 0.10 g/L) and normal C4 fraction (> 0.10 g/L) in the serum. Express as the percentage of total IgG in the cryoprecipitate (mean ± SEM); Low C4: black triangle; normal C4: white triangle; *p = 0.01, ns non-significant, by Mann-Whitney testBack to article page