Table 3 HLA-B27/Chlamydia peptide tetramer staining of CD8+ T cells from synovial fluid of six HLA-B27+ patients (nos 1–6) and three HLA-B27- patients (nos 7–9) with Chlamydia-triggered reactive arthritis
CD8+ T cells from the synovial fluid of three HLA-B27+ patients with enterobacteria-triggered reactive arthritis (patient nos 10–12), three patients with rheumatoid arthritis (patient nos 13–15) were analysed; the peripheral blood of six healthy HLA-B27+ blood donors was also analysed (not shown). Positive results are indicated with +, no staining with -. All other peptides tested negative. n.d., not done.