cytochemical staining of fixed tissue or perfusion of the kidney in situ with cationic cacodylate-iron colloid revealed that the ionized anionic groups of acid mucopolysaccharides were distributed on both the luminal and abluminal surfaces of endothelial cells , and in the thick fibrous lamina rara interna of the glomerular basement membrane ;
C1517719
lamina rara interna
C0599297
glomerular basement membrane