How T-cells Work
Step 9 of 10. T cells constantly patrol our body
T cells constantly patrol our bodies and scan for other cells that display ‘foreign’ peptides that indicate a cell is infected with a germ or has become cancerous.
In this way killer T-cells (also known as cytotoxic T lymphoctes or CTL) are able to see inside cells by scanning their surface with a molecule called the T-cell receptor