WT1 and nephritis: For anti‐Thy‐1 nephritis is dominated by mesangial lesions, and it has been reported that activated MCs could produce VEGFA38 which was verified by co‐staining VEGFA with the protein marker of MCs (Thy‐1) or the protein marker of podocytes (WT‐1, Wilms tumour protein1) in glomeruli.