So the point is, liposomes can be used to study the properties of cell membranes or they can be used to deliver drugs to patients. Now, the final thing I'd like to mention about liposomes is we can also actually build liposomes that contain proteins embedded inside the liposome. And we can use these types of protein liposome structures to study the properties of the proteins that exist within the cells of our body, within the cell membranes of our body. So how do we build, how do we actually embed these proteins into the bilayer membrane of liposomes? Well, all we have to do is we basically take the proteins of interest and we mix them with detergents, and then we mix that with that particular phospholipid solution in the aqueous solution we once again sonicate. And that allows us to actually embed those proteins inside the liposome.