Fig. 3From: Renal clearance of graphene oxide: glomerular filtration or tubular secretion and selective kidney injury association with its lateral dimensionUltrastructure imaging of the glomerulus and proximal tubule by TEM at 4Â h after i.v. injection of s-GOs and l-GOs. s-GOs were shown depositing in podocyte foot process (a), the renal tubular space (b) and the cytosol of renal tubule epithelial cell (c). l-GOs deposited in peritubular capillary (d), tubular interstitium (e) and tubular lumen (f). Clusters of GOs were indicated by red arrowsBack to article page