Toxic Radius (image) Rockefeller University Share Print E-Mail Caption The researchers placed tiny droplets of 25 newly discovered antibiotics on a carpet of beta-lactam resistant S. aureus. They identified two compounds that generated circles of dead bacteria (dark spots) around each droplet. Credit Sean Brady Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.