Lipid Aggregate Structures, con’t.
	• Bilayer structures wrap to form “vesicles”, which can be unilamellar or multilamellar. • Unilamellar structures are called liposomes. • See Figure 9.4 • Liposomes are stable and can be “purified”, creating structures with different contents inside and outside • Liposomes serve as good models for membranes • Liposomes have been used for drug delivery to specific locations