Figure 2

Flowchart of the patients’ classification. The percentage of each antigen in patients with primary and secondary MN is depicted in pie charts. MN membranous nephropathy, IHC immunohistochemistry, PLA2R phospholipase A2 receptor, THSD7A thrombospondin type-1 domain-containing 7A, NELL-1 neural epidermal growth factor-like 1 protein, SEMA3B semaphorin 3B, Ext exostosin. *Two samples with enhanced staining of Ext1/Ext2 also had enhanced staining of other podocyte antigens (one sample was positive for PLA2R, and another was positive for THSD7A).