T cell activation induces expression of functional T cell surface molecules Induction and MHC/peptid Activated activation of B cells Late Activated CD4+T cell APCs CD4+T cell CD40L TCR TCR CD25 Resting APC CD4+T cell Qa-1/VB VLA-1 Collage TCR anti-Qa-1/ Migration of sites of inflammation Activated Regulatory CD8+T cell CD8+T cell Down-regulation of Activated CD4+T Cells L.Chess 2002MHC/peptid e TCR Qa-1/V Activated CD4+ T cell Resting CD4+ T cell Down-regulation of Activated CD4+ T Cells T cell activation induces expression of functional T cell surface molecules Regulatory CD8+ T cell TCR (anti-Qa-1/V) Activated CD8+ T cell (+) (-) TCR APC TCR Late Activated CD4+ T cell VLA-1 Collagen CD40L Migration of sites of inflammation Induction and activation of B cells APCs CD25 L. Chess 2002