The deposition of gamma globulins and complement at the dermal-epidermal (D-E) junction of normal-appearing skin was found by direct immunofluorescence in 54% of patients with systemic lupus erythematosus and in only one patient with procainamide-induced lupus. No patients with rheumatoid arthritis or other antinuclear-antibody-positive connective tissue diseases showed this deposition. The D-E junction staining was found only in patients with clinically active systemic lupus erythematosus, but it could not be correlated with specific organ system involvement.
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Jay Grossman (1974) studied this question.
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