3 days popular7 days popular1 month popular3 months popular

T cells use ‘handshakes’ to sort friends from foes

T cells, the security guards of the immune system, use a kind of mechanical “handshake” to test whether a cell they encounter is a friend or foe, a new study finds.

The Mechanical Forces of T Cells
A 3-D rendering of a fluorescence image maps the piconewton forces applied by T cells. The height and color indicates the magnitude of the applied force.
Credit: Microscopy image by Yang Liu, Emory University.