Moreover, no intraglomerular lipid deposition visualized by Oil-red O (ORO) staining, no inflammatory macrophage infiltration visualized by Mac2 immunohistochemical staining and no glomerular fibrosis visualized by Masson staining were observed in 5-month-old Srb1-/- mice (Figure 1C). This evidence concerns the gene SCARB1 and fibrosis.