AIR SUPPLY Depriving some cancerous tumors, such as this mouse breast tumor, of oxygen by cutting off blood vessels (red) is one treatment approach. But some oxygen-starved cancer cells (green) can become more aggressive.
Steve Seung-Young Lee/Univ. of Chicago Comprehensive Cancer Center, NCI/NIH, Flickr (CC By-NC 2.0)
SOUND SCIENCE Different ways of reviewing medical evidence serve different purposes, with no form necessarily superior, researchers argue in a recent paper.
Like SARS before it, a new coronavirus originated in a bat cave in China. But this time, pigs, not humans, are the victims.