Fig. 1From: IgG4-related disease: case report and literature reviewImmunostaining for IgG and IgG4 is strongly positive in plasma cells. Arrow IgG4 + plasma cells. Anti-IgG4 (MRQ-44) Mouse monoclonal antibody: In formalin fixed, paraffin-embedded tissue optimally diluted for Ventana Roche detection kits in automated slide strainer Benchmark UltraBack to article page