Erratum for Papadaki et al., entitled Bone marrow progenitor cell reserve and function and stromal cell function are defective in rheumatoid arthritis: evidence for a tumor necrosis factor alpha-mediated effect

In the article by Papadaki et al entitled “Bone marrow progenitor cell reserve and function and stromal cell function are defective in rheumatoid arthritis: evidence for a tumor necrosis factor alpha-mediated effect,” which appeared in the March 1, 2002, issue of Blood (Volume 99:1610-1619), Figure 1 depicts the mode of data analysis from a representative healthy control. Due to an oversight, this figure is similar to Figure 1 of the article by Papadaki et al entitled “Increased apoptosis of bone marrow CD34⁺ cells and impaired function of bone marrow stromal cells in patients with systemic lupus erythematosus” published in the October 2001 issue of British Journal of Haematology (Volume 115:167-174). Although this does not affect any of the data or conclusions of the papers, Dr Papadaki, as corresponding and senior author of both papers, wishes to replace Figure 1 in Blood 2002;99:1610-1619 with the figure below derived from the cohort of the healthy controls used in the Blood study. Dr Papadaki apologizes to Blood and British Journal of Haematology editorial staff and readers for this oversight.