Figure 2:an artist’s impression of 6 ways of T-cell maturity or regression. a) Central deletion of auto-reactive in thymus. b) Strong stimulation of lymphocytes by dendritic cells and their subsequent development towards comitogenic TH1 or TH2. c) A naive non-stimulated cell maturing with strong cells to become activated. d) The same activated T-cell becomes anergic when it does not receive enough stimulation. e) Th1 or Th2 allowing the transformation of B cells to plasma cell. f) Lysis of target cell with strong interaction and the costimulation of death receptor CD95/95L.