Now, the gram negative contains this inner membrane, a thin cell wall, and an outer membrane. And the outer membrane contains these polysaccharides, which are based or lipopolysaccharides, which are basically the lipids attached to long chains of sugars. And these sugars create a net negative charge around the entire cell bacterial cell, and that protects it from different types of drugs. Now, we also have a section that connects the cell wall to our outer membrane, and this is our poly, our lipoproteins. So these brown regions are lipoproteins, also known as browns lipoproteins. And the entire or the main function of these brown lipoproteins, is to actually hold together via covalent bonds, the thin cell wall as well as our outer membrane.