Figure 2.
Serum protein electrophoresis tracings. (A) Normal; (B) a 40-g/L monoclonal band running in the β1 region in a patient with IgG4 myeloma; (C) PHGG, predominantly IgG1, in a patient with Sjӧgren syndrome; (D) PHGG with beta-gamma bridging in a patient with IgG4-RD (Clinical Case 1). Figure courtesy of Eric Zhao and Andre Mattman.