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Figure 2 Propensity of apoptosis in polymorphonuclear leukocytes (PMN) (A) and peripheral blood mononuclear cells (PBMC) (B) as determined by flow cytometric TUNEL assay. The percentage of cells with DNA fragmentation of nuclei equals the high fluorescein isothiocyanate-dUTP–labeled population divided by the total cell population. *p < 0.01 compared among different points. A significant (p < 0.01) interaction exists between time variable and group variable in (B).