FN1 and focal segmental glomerulosclerosis: In addition, the results of immunohistochemical staining showed that the YSHS granule not only significantly reduced the expression of Fibronectin (FN) (Figure 3E) and Vimentin (Figure 3F) in the glomeruli of FSGS model mice, but also significantly reduced the expression of α-SMA (Figure 3G) on the renal capsule wrapped outside the glomeruli.