A correction should be made to the article “Deletion of Membrane-Bound Steel Factor Results in Osteopenia in Mice” by Sutada Lotinun, Glenda L Evans, Russell T Turner, and Merry Jo Oursler published in 20:644-652, April 2005. The order of the authors was listed incorrectly and should appear as S Lotinun, GL Evans, MJ Oursler, and RT Turner.