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Effect of rapamycin on γH2AX phosphorylation in senescent cells. HT-p21a cells (deleted) and HT-p16 cells (low) were treated with IPTG, rapamycin (RAPA) or IPTG + Rapa for 4 days. (A) Left column: DNA content (X-axis) vs. H2AX levels (Y-axis). (B) Right column: γH2AX levels (X-axis) vs. cell count (Y-axis).
