SYNPO and anti-neutrophil cytoplasmic antibody-associated vasculitis: To confirm that the selected markers can be detected on renal parenchymal cells, we performed double IF staining for claudin1 and cytokeratin (Figure 1A–C), for claudin1 and synaptopodin (Figure 1D–F), and for CD68 and NE on the kidney tissues of patients with minor glomerular abnormalities (MGA) and patients with ANCA-associated vasculitis (AAV).