How do naive T cells migrate into the lymph nodes?

1. rolling adhesion on high endothelial venules (HEVs) mediated by L-selectin 2. chemokines (CCL19, CCL21) from lymph node attach to CCR7 on the T cell 3. CCR7 activates leukocyte function-associated antigen 1 (LFA-1) on the T cell 4. binding affinity of LFA-1 to ligand ICAM-1 on endothelium is increased 5. firm binding 6. T cell exists the vessel through junctions into the lymph node