Researchers led by a team from Ben-Gurion University of the Negev in Israel have just discovered a way to destroy harmful 'senescent' cells that accumulate with age and ramp up the kind of tissue damage and inflammation that slowly brings life to a grinding halt. The team found that CD4 T immune cells transform into assassins of the damaging tissues when biological aging is detected in the body. The new fighters, called CD4-Eomes (after the protein they produce), have been spotted before .