Notes: 1:Clickable 2:Unclickable DNA Repair Cell Cycle Arrest H2AX XRCC4 PNKP Non-Homologous EndJoining (NHEJ) Repair Artemis Ku70 Ku80 Ku70/80 DNA Double-Strand Breaks (DSBs) P {{ board.text }} {{ board.text }} {{ board.text }} {{ board.text }} {{ group.title }} {{ text.text }} {{ button.text }} DNA Ligase IV {{ group.title }} {{ text.text }} Notes: 1:Clickable 2:Unclickable