Close window Published online: 4 April 2007; | doi:10.1038/news070402-6 Weak drug combos find new useAntibiotics that don't work could beat back resistant bacteria.John Whitfield You would think that a combination of antibiotics that is less effective than either drug on its own would be fairly useless. But researchers now say that such ineffectual mixes could be used in the campaign against resistance to the drugs. The counterintuitive conclusion comes from the observation — so far seen only in the lab — that less-effective drug mixes allow bacteria that are sensitive to drugs to out-compete those that are resistant them....