摘要：I commend Nachman et al. (2013) on their careful study of arsenic content in market sam-ples of chicken and am dismayed to learn that arsenic levels in chicken remain high despite our report of arsenic levels in Environmental Health Perspectives in 2004 (Lasky et al. 2004).One possible explanation is the very complicated lines of authority around the regu lation of drugs fed to food animals, along with the enforcement of those regulations. Nachman et al. (2013) focused their dis-cussion on the role of the Food and Drug Administration (FDA), but many other agen-cies participate in the regulation and enforce -ment of residue safety in food animals. As noted by the Food Safety and Inspection Service (FSIS) in the introduction to their 2012 Residue Sampling Plans (FSIS 2012),The U.S. National Residue Program (NRP) for Meat, Poultry, and Egg Products, adminis tered by the USDA [U.S. Department of Agriculture] FSIS, is an interagency program designed to identify, rank and test for chemical contaminants in meat, poultry, and egg products
