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Absence of glomerular renal tubular epithelial antigen in membranous glomerulonephritis.

Renal biopsies from 24 patients with membranous glomerulonephritis were examined by indirect immunofluorescence for the presence of autologous renal tubular epithelial antigen (RTE). Staining of the luminal layer of proximal tubular epithelium was found in all cases, as with normal human kidney, but granular staining along glomerular capillary walls was not observed. The role of RTE in the genesis of human membranous glomerulonephritis has not been confirmed.