Bacteria (image) University of California - San Diego Share Print E-Mail Caption Multi-drug resistant Gram-negative rod bacteria Acinetobacter baumannii is being killed by the common antibiotic azithromycin (green) in the presence of a human antimicrobial peptide naturally present at infection sites. Credit UC San Diego School of Medicine Usage Restrictions Use credit as indicated. 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.