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. 2020 Dec 1;21(23):9176. doi: 10.3390/ijms21239176

Figure 5.

Figure 5

Proposed mechanism of RB in regulating CtIP mediated end resection for DSB-repair pathway choice. PARP1 inhibitor specifically blocking MMEJ may sensitize RB-deficient cells to co-treatment with PARP inhibitor and camptothecin. The red cross indicates inhibition of the extensive resection. The red arrow shows the initial resection would lead to MMEJ.