Liposomes are used in contemporary medicine to carry and apply drugs and genes into different tissue areas of the body. They are small bubble-shaped lipid molecules, and an attractive candidate for delivery because they are composed of the same material as cell membranes. Several types of cancer, for instance, are treated with liposome therapy.
Nano-sized liposomes would remarkably improve the precision and effectiveness of drug and gene delivery. A few such technologies already exist in the market and in clinical use, but cell-specific delivery is still a property to be explored in nanomedicine.