Correlation of caspase-9 with biomolecules in serum samples. Caspase-9 correlated with: (A). C-reactive protein (CRP). (B). matrix metalloproteinase-9 (MMP-9). (C). B-cell lymphoma 2 protein (Bcl-2). (D). Bcl-2–associated X protein (Bax). (E). Caspase-8. (F). Caspase-3. Correlation analysis was done by the statistical SPPS programme. Linear regression line is presented within 95% confidence interval. Regression coefficients (R2) and statistical significance (P < 0.05) are shown in the graphs.