lymphocyte activation during immune response T cell activation during immune response 2009-11-22T03:36:05Z A change in the morphology and behavior of a mature or immature T cell resulting from exposure to a mitogen, cytokine, chemokine, cellular ligand, or an antigen for which it is specific, leading to the initiation or perpetuation of an immune response. GO:0002286 GO:0002286 IDOMAL:0000358 T lymphocyte activation during immune response T-cell activation during immune response T-lymphocyte activation during immune response guest idomal_namespace