there are large petri dishes, and then there is MEGA, an enormous, 2-foot-by-4-foot slab of black agar infused with a gradient of antibacterial drugs. Researchers built this behemoth to watch ...

Scientists have built a giant petri dish to visualize how bacteria move as they become immune to drugs. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases ...