Correlation between the levels of TNF-α in LTBMC supernatants and the values of hemoglobin, the numbers of BFU-Es, and the proportions of apoptotic BM erythroid cells.

Diagrams show the linear regression analysis for the correlation between the values of TNF-α in LTBMC supernatants and the levels of hemoglobin (A), the numbers of BFU-Es obtained by BMMCs in the clonogenic assay (B), and the proportions of apoptotic CD34⁺/CD71⁺ progenitor (C) and CD36⁺/glycoA⁺ precursor cells (D) in the entire group of subjects studied. Coefficient of correlation (r) and degree of significance (P) are indicated. Regression lines are shown as solid lines and the 95% confidence limits as dotted lines. (●) RA patients; (○) normal controls.