Figure 6. After surgery, the patients were classified into three groups: those with Hb ≤ 8 g/dL (A), 8 g/dL < Hb <10 g/dL (B), and Hb ≥10 g/dL (C). Flow cytometry statistical analysis histograms of CD4+CD25+Foxp3+Treg cells and CD4+ IL17+ T cells in HF patients stratified by transfusion or nontransfusion.