For the article “Comparison of Immunochemical (Enzyme-Linked Immunosorbent Assay) and Immunohistochemical Methods for the Detection of Central Nervous System Tissue in Meat Products” by Hossner, K. L., R. S. Yemm, S. E. Sonnenshein, G. L. Mason, B. A. Cummings, M. C. S. Reddy, J. N. Sofos, J. A. Scanga, J. D. Tatum, G. C. Smith, and K. E. Belk, J. Food Prot. 69(3):644-650, the authors indicate the following. A typographical error was noted in the second column of p. 645 describing procedures associated with the F-ELISA: reference “(22)” is cited incorrectly and should be changed to reference “(16).” Secondly, an error of omission was noted. The study was completed during 2003 using a U.S. Department of Agriculture (USDA) Food Safety and Inspection Service (FSIS) immunohistochemical (IHC) protocol that was supplied to the researchers by the Agency (FSIS). The Agency subsequently archived that protocol and published a revised protocol (USDA-FSIS, 30 January 2004; Detection of Central Nervous System Tissue and Dorsal Root Ganglia in Beef and Central Nervous System Tissue in Pork Comminuted Meat Products by Histologic Examination of Hematoxylin and Eosin Stained Slides and Glial Fibrillary Acidic Protein Immunohistochemistry; SOP No: PLG 0001.01; available at: http://www.fsis.usda.gov/ophs/plg/plg0001.01.pdf) that differed in the criteria used for detecting dorsal root ganglia (DRG) for regulatory purposes and that was implemented in an Interim Final Rule published in the Federal Register on 12 January 2004. Our article should have acknowledged that the study was completed before the original IHC protocol was archived and the new protocol was implemented.