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Table 1 Characteristics of patients

From: Use of HLA-B27 tetramers to identify low-frequency antigen-specific T cells in Chlamydia-triggered reactive arthritis

Patient no. B27 Disease Sex Age (years) Disease duration Chlamydia in urine (PCR) Synovial T cell proliferation Antibodies
1 + ReA Male 18 5 months + Chlamydia trachomatis n.d.
2 + ReA Male 20 2 months + Chlamydia trachomatis n.d.
3 + ReA Male 32 5 months + Chlamydia trachomatis +
4 + ReA Male 34 3 months + Chlamydia trachomatis n.d.
5 + ReA Male 20 1 month + n.d. +
6 + ReA Male 26 1 month + Chlamydia trachomatis +
7 - ReA Male 56 1 month + Chlamydia trachomatis n.d.
8 - ReA Male 43 3 months + Chlamydia trachomatis n.d.
9 - ReA Female 32 6 months + Chlamydia trachomatis n.d.
10 + Chronic ReA Male 20 7 years - Enterobacteria n.d.
11 + ReA Male 47 3 weeks - Enterobacteria n.d.
12 + ReA Female 49 6 months - Enterobacteria n.d.
13 n.d. RA Female 67 10 years n.d. n.d. n.d.
14 n.d. RA Female 49 >1 year n.d. n.d. n.d.
15 n.d. RA Female 62 14 years n.d. n.d. n.d.
  1. n.d., not done; PCR, polymerase chain reaction; RA, rheumatoid arthritis; ReA, reactive arthritis.
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