A<unk>  (Th0 cell) is a T cell that has differentiated in the thymus, and successfully undergone the positive and negative processes of central selection in the thymus. Among these are the<unk>  forms of helper T cells (CD4+) and cytotoxic T cells (CD8+). A<unk>  is considered immature and, unlike activated or memory T cells, has not encountered its cognate antigen within the periphery.
Naive T cell
Nonspecific immune cell
Reactive lymphocyte
Memory B cell
Regulatory B cell
Regulatory T cell
Chimeric antigen receptor T cell
Natural killer T cell