#T_cell__T_lymphocyte  a small lymphocyte developed in the thymus; it orchestrates the immune system's response to infected or malignant cells
  supertype:  lymphocyte__lymph_cell__lymphcell  an agranulocytic leukocyte that normally makes up a quarter of the white blood cell count but increases in the presence of infection
  subtype:  helper_T_cell__CD4_T_cell__CD4_cell  T cell with CD4 receptor that recognizes antigens on the surface of a virus-infected cell and secretes lymphokines that stimulate B cells and killer T cells
  subtype:  killer_T_cell__CD8_T_cell__CD8_cell  T cell with CD8 receptor that recognizes antigens on the surface of a virus-infected cell and binds to the infected cell and kill it

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