In the article, “Lipid peroxidation, caspase-3 immunoreactivity, and pyknosis in late-gestation fetal sheep brain after umbilical cord occlusion” by Margie Castillo-Melendez et al. (Pediatr Res 55:864–871) the authors report that the values for the immunohistochemistry quantification are off by a factor of ten due to a calculation error. The statistics on the data are unchanged. The authors regret the error.