Future Biotechnology on Instagram: "How T Cells Kill Cancer Cells T cells, especially cytotoxic CD8+ T lymphocytes, play a central role in the body’s immune defense against cancer. When a T cell recognizes a cancer cell through its T cell receptor (TCR), it forms a specialized junction called the immune synapse. This structure allows the T cell to deliver lethal proteins, such as perforin and granzymes, directly into the cancer cell. Perforin creates pores in the target cell membrane, while gran