Ectopic Germinal Centers and IgG4-Producing Plasmacytes Observed in Synovia of HLA-B27+ Ankylosing Spondylitis Patients with Advanced Hip Involvement

<div>Radiographic findings in AS patients with advanced hip joint disease. (a) Case 3; (b) case 5; (c) case 6; and (d) case 7.</div>

International Journal of Rheumatology

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Figure 1

Figure 1: Ectopic Germinal Centers and IgG4-Producing Plasmacytes Observed in Synovia of HLA-B27+ Ankylosing Spondylitis Patients with Advanced Hip Involvement 

Figure 1 | Ectopic Germinal Centers and IgG4-Producing Plasmacytes Observed in Synovia of HLA-B27+ Ankylosing Spondylitis Patients with Advanced Hip Involvement 