Joshua Radke, University of South Florida (IMAGE) University of South Florida (USF Health) Caption Joshua Radke, a Ph.D. student in the Department of Molecular Medicine at the University of South Florida, was a first author of the study discovering that plant proteins, known as AP2 factors, are instrumental in the transition of Toxoplasma from an acute to chronic stage. Credit © University of South Florida Usage Restrictions Please use with appropriate caption. License Licensed 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.