Cells typically respond to DNA damage in three ways: by ceasing to grow and divide until the damage is repaired, by permanently ceasing to grow and divide, or by dying. In 2010 a group of
scientists reported that a certain kind of immune reaction can cause DNA damage that leads to a
fourth response. DNA damage can turn off genes involved in cell-signaling pathways. Turning off
cause less-mature cells to divide too rapidly, often leading to the development of