Immunocytologic Dissection of the Urine Sediment Using Monoclonal Antibodies

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Abstract
A method to identify nucleated nonsquamous cells in urine using monoclonal antibodies and immunoperoxidase stain is described. Cells from washed deposits of midstream urine samples were transferred to gelatinized slides in a cytocentrifuge, air-dried, acetone fixed, and subjected to microwave irradiation. Slide preparations were then treated with monoclonal antibodies with the use of a four-layer peroxidase-antiperoxidase technique. It was possible to identify granulocytes, monocytes, lymphocytes, and renal epithelial and urothelial cells. This method was found to be helpful in determining the profiles of cells in urine in acute tubular necrosis, drugrelated acute interstitial nephritis, and crescentic glomerulonephritis.