Programmed proteins might help prevent malaria

Despite decades of malaria research, the disease still afflicts hundreds of millions and kills around half a million people each year - most of them children in tropical regions. Part of the problem is that the malaria parasite is a shape-shifter, making it hard to target. But another part of the problem is that even the parasite's proteins that could be used as vaccines are unstable at tropical temperatures and require complicated, expensive cellular systems to produce them in large quantities.