Most species of bacteria can be broadly divided into two groups, known as gram-positive and gram-negative. These categories reflect big differences in the microbes' biology, and they also dictate ...

A novel compound targets an essential transport system found only in disease-causing bacteria, leaving commensal bacteria ...

Gram-negative bacteria's thick outer membrane prevents entry of toxic molecules, including antibiotics. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases ...

said finding new antibiotics to treat gram-positive infections like MRSA was good news, but would not address the most pressing need. "Our concern are the so called gram-negative bacteria which ...