So what types of lipids actually form the lipid bilayer? Well, the bulk here lipids, the larger lipids. So unlike fatty acids, things like glycolipids or phospholipids or cholesterol molecules, these are too large to fit Snugly on the interior structure of the myosoline. So instead they form these lipid bilayer. So phospholipids and glycolipids readily form bilayer structures and not my cells. This is because the larger non polar tails of these lipids is too large to fit into the limited space of the MiCell.