(D) Tracking of cell division by CFSE dilution. The black line separates cells that have not divided (nº of div=0, CFSE-high) from those that have undergone at least one division (nº of div≥1, CFSE-low). (E) CENP-A expression and CFSE dilution. Black lines were set based on CENP-A isotype control and CFSE maximal staining at day 0 (cells in shaded quadrants are CFSE-high/CENP-A-low). One representative donor is depicted. (F) Absolute number of CFSE-high/CENP-A-low CD4+ T cells (shaded gate in E). Symbols represent individual donors. Error bars represent SEM from 6 independent donors. One-way ANOVA, multiple comparisons, n=6. *p < 0.05; **p < 0.01. (G) Frequency of cells without centromeric CENP-A determined by immunofluorescence microscopy before and post activation. Symbols represent individual donors, n=4. Error bars represent SEM from 6 independent donors. 