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

<div>Histologic findings and expression of CD molecules in case 5. (a) Staining with hematoxylin and eosin [H&amp;E]. (b) CD21-positive FDC networks (DAB staining, 200x); (c) numerous CD20 positive B-cells in lymphoid neogenesis (DAB staining, 200x); and (d) Numerous CD3 positive T-cells in lymphoid neogenesis (DAB staining, 200x).</div>

International Journal of Rheumatology

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Figure 2

Figure 2: Ectopic Germinal Centers and IgG4-Producing Plasmacytes Observed in Synovia of HLA-B27+ Ankylosing Spondylitis Patients with Advanced Hip Involvement 

Figure 2 | Ectopic Germinal Centers and IgG4-Producing Plasmacytes Observed in Synovia of HLA-B27+ Ankylosing Spondylitis Patients with Advanced Hip Involvement 