Semiquantitative RT-PCR for expression ofTfR2-α, TfR2-β, and TfR1 mRNAs.

Expression levels of TfR2-α, TfR2-β, and TfR1mRNA are shown in panels A, B, and C, respectively. Each value was calculated as a percentage of the level detected in K562 cells (% K562). In every panel, each circle represents one sample, and every bar shows a mean ± SD in its clinical category. Nonmalignant BMs and normal PBMNCs were used as controls, and the bars corresponding to them were shaded. AML/MDS indicates AML evolved from MDS.