Michael D.L. Johnson (IMAGE) University of Arizona Health Sciences Caption University of Arizona Health Sciences researcher Michael Johnson, PhD, an associate professor of immunobiology, said he hopes his work on how copper interacts with bacteria could someday lead to a next-generation antibiotic. Credit Photo by Nicole Swinteck, U of A College of Medicine – Tucson Department of Immunobiology Usage Restrictions Photo by Nicole Swinteck, U of A College of Medicine – Tucson Department of Immunobiology License Original content 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.