http://phys.org/news/2014-11-alternative-antibiotics.html Scientists have been creating artificial nanoparticles made of lipids, called liposomes, and injecting them into infected hosts. The liposomes closely resemble the membrane of host cells and so they function as decoys to which bacterial toxins can attach. Without the bacterial toxins, the bacteria are rendered defenseless against the host immune system. Scientists infected mice with a lethal dose of septicemia and then gave them the liposomes. The mice survived without any additional antibiotics being administered. Liposomes are already used to deliver specific medications into the body of clinical patients. These scientists just believe they've created liposomes which are "irresistable bait" for the bacterial toxins. The reason we need to be searching for alternatives to antibiotics is because more and more antibiotic-resistant bacterial strains are popping up each year because of over-use of antibiotics. Since these liposomes do not directly attack or interact with bacteria, they do not promote the development of antibiotic resistance. Kind of cool.