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Figure 3 Gene expression of Smad2 (A), Smad3 (B), and Smad7 (C) in peripheral blood mononuclear cells from 15 patients with unstable angina pectoris (AP), 15 patients with stable AP, and 10 healthy controls. The messenger ribonucleic acid (mRNA) levels were quantified using real-time quantitative reverse transcription polymerase chain reaction, and data are presented relative to the gene expression of beta-actin (mean ± SEM). *p < 0.05 versus healthy controls. p < 0.05 versus stable AP.