Copyright ? 2015 Jankovic and Feng. T cells is fixed and constrained by the TCR they express, their effector potential is flexible and unbiased. After antigen encounter, Th lymphocytes acquire a specific effector function by responding to the summation of input signals provided by antigen-presenting cells (APC) and cytokine microenvironment. The functional diversity of Th… Continue reading Copyright ? 2015 Jankovic and Feng. T cells is fixed and