The uptake of formalin-denaturated homologous albumin (FDA) by rat liver sinus-lining cells was studied using ultrastructural, cytochemical, and immunocytochemical techniques. Three minutes after intravenous injection of: 1) FDA, 2) peroxidase-coupled FDA (HRP-FDA), 3) ferritin-labeled FDA (FE-FDA), 4) colloidal gold-labeled FDA (CG-FDA), or 5) 0.85% NaCl, livers were fixed by perfusion with tw...