T cells are the immune cells responsible for recognizing and destroying specific invaders, such as viruses, bacteria, or cancer. Their activity is highly tunable, with signals from other cells adjusting T cell responses to counteract the invasion. However, sometimes those responses fall short, as in chronic viral infections and cancers that thwart immune responses by inducing T cell dysfunction.  Now, a study led by scientists … Continue reading Study identifies a new regulator of immune responses.