Figure 2From: The effect of two novel cholesterol-lowering agents, disodium ascorbyl phytostanol phosphate (DAPP) and nanostructured aluminosilicate (NSAS) on the expression and activity of P-glycoprotein within Caco-2 cellsStructure of montmorillonite clay. Montmorillonite has a layer-lattice structure consisting of two sheets of tetrahedral siliconcrystals enclosing a sheet of octahedral aluminium crystals. Water and surface cations enter between adjacent silicon sheets causing the material to expand.Back to article page