by Karolinska Institutet Graphical Abstract. Credit: Immunity (2023). DOI: 10.1016/j.immuni.2023.01.026 T-cells that are part of our immune system are central in the protection against infections and cancer. With the help of TCRs, the cells recognize foreign invaders and tumor cells. “It was previously unknown how variable human TCR genes are,” says Gunilla Karlsson Hedestam, professor at the...