“…In one study, chlamydial organisms were iso¬ lated from affected human joint tis¬ sues. 8 Organisms have also been iso¬ lated from the anterior chamber of a patient with Reiter's syndrome.9 In another study, chlamydial organisms injected into animals produced typical ocular, articular, and urethral dis¬ ease.10 In addition, patients with Reit¬ er's syndrome occasionally show ris¬ ing serum complement fixation titers to Chlamydia. Findings from immunofluorescence studies, presumably more specific for chlamydial antigen, are often positive as well.…”