And P53 possesses the power to command apoptosis directly. So it senses damage in a normal cell. That's its function. In a cell that's becoming abnormal, it continues to keep its finger on that pulse. And if there's catastrophic damage, then it's p53 that says let's not try to repair this anymore Let's fold up shop and undergo a civilized cell death and let our neighboring Let's say liver cell just take over and do our job if we're a liver cell