Serum IgA to enterobacteria in ankylosing spondylitis.


The aetiology of ankylosing spondylitis (AS) may involve certain enterobacteria. It is therefore interesting that serum polymeric IgA, a precursor of secretory IgA, was statistically elevated in active AS (n = 35) and that levels were comparable to those found in yersiniosis (n = 12); this might indicate antigenic stimulation by bacteria which are present… (More)


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