Figure 10: Computer result of a pathogen (with antigen ) coupled through averages to an immune system consisting of an effector (producing antigen receptor ) and memory . Case where the pathogen is reappearing while the immune system response is low. Glimpse at generation . Parameter values other than Figure 2: For average (above threshold value, immune effector active): . For average (below threshold value, pathogen not seen by immune system): . For average (above threshold value, pathogen seen by immune system): .