title: Commentary on "Are there location/cage/systematic nontreatment effects in long-term rodent studies? A question revisited".
authors: National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709.
authors: J K
authors: JK
authors: Haseman
mesh_terms: D000818:Animals; D000830:Animals, Laboratory / Q000502:physiology*; D012107:Research Design; D014116:Toxicology / Q000592:standards*