Additional file 1: Figure S1. Representative photomicrograph of the urinary sediment stained with H/E of a patient with nephrotic syndrome (x400) (A). Immunofluorescence of the urinary sediment of an acute tubular necrosis patient showing positive marking of KIM-1 (green) and nucleus (blue) (B), and immunofluorescence of the urinary sediment of an inflammatory-proliferative glomerular lesion patient showing positive marking of CD45 (green) and nucleus (blue) (C).