New Antibiotic

Scientists have recently discovered a molecule in wallaby milk that kills many types of bacteria and fungi. The molecule, AGG01, is 100 times more effective than penicillin in killing bacteria such as E coli. With many strains of bacteria becoming resistant to current antibiotics, finding new drugs like this will have ever increasing importance.
The molecule is extracted from wallaby milk. Baby wallabies are born without a developed immune system, so the mother's milk must provide biomolecules that are anti-microbial.

A similar mechanism takes place in humans when babies breastfeed. The baby literally ingests some of the mother's immunity. That is one reason doctors recommend that mothers breastfeed their babies if at all possible.

http://news.scotsman.com/scitech.cfm?id=593632006