A naive T cell or Th0 cell is a T cell that has differentiated in bone marrow, and successfully undergone the positive and negative processes of central selection in the thymus. A naive T cell is considered mature and unlike activated T cells or memory T cells it has not encountered its cognate antigen within the periphery [Wikipedia: http://en.wikipedia.org/wiki/Naive_T_cell].
Hierarchy: 1
Parent: immune system
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