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Figure 2. Relationship between percentages of CD4+CD25+ cells (A,B) or CD4+CTLA-4+ cells (C,D) and B/T ratio, and CD4+CD25+ and CD4+CTLA-4+ cells (E,F). Fifty areas of 17 specimens of periodontitis and 15 areas of 9 specimens of gingivitis were analyzed. Each circle represents one area. Significantly positive correlation was observed between the percentages of double-positive cells and the B/T ratio in periodontitis (A,C). Significantly positive correlation was observed between the percentages of CD4+CD25+ cells and CD4+CTLA-4+ cells in both periodontitis and gingivitis (E,F). A,C,E: Periodontitis. B,D,F: Gingivitis.
