FDA Postdoctoral Fellowship in the Characterization of Toxic Heavy Metals within the USDA Sweetpotato Germplasm Collection A research opportunity is currently available at the U.S. Food and Drug Administration (FDA), Center for Food Safety and Applied Nutrition (CFSAN), located in the Office of Regulatory Science (ORS) in Charleston, South Carolina.     The research general objectives are to screen USDA, ARS sweetpotato germplasm for accumulation of arsenic (As), cadmium (Cd), and lead (Pb) to identify germplasm and genetic markers that can be used in public breeding programs for development of varieties that have low levels of toxic heavy metals to ensure a safe source of food for human consumption. This project addresses a gap in knowledge in the