T lymphocytes run cell-mediated immunity. They do not make antibodies. Instead, they lead the fight and kill infected cells directly. They only act when an antigen is presented to them. Tap each type.
Helper T cell
T cellscell-mediated immunity
The T cells
Presentation: cells show bits of antigen on MHC proteins. MHC I is on all cells with a nucleus, and killer T cells check it. MHC II is on antigen-presenting cells, and helper T cells check it.
📷 Reference image
A real labeled figure to compare with the interactive above.
T Cells — Harlé, G.; Kowalski, C.; Garnier, L.; Hugues, S., CC BY 4.0 (via Wikimedia Commons)
