T-Cell Activation
unseel.com · signal 1 · signal 2 · signal 3 · clonal expansion
stage naive
signal
progeny 1 cell
focus
naive T cell
dendritic cell (APC)
signal 1: TCR-MHC
signal 2: CD28-B7
signal 3: IL-2 cytokine
Unseel.com · T-Cell Activation