784512.fig.009
Figure 9: 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 pathogen is eliminated. Glimpses at generation (a) , (b) and (c) . Upper left (triangle graph for 0 and scales 0.15 for and 32 for ): probability of finding individuals of the pathogen (green). Lower left (triangle graph): probability of finding individuals of the immune effector (red) and individuals of the immune memory (blue), ( ). Upper right: extinction probability as a function of generations of pathogen (green), immune effector, and immune memory (violet). Lower right: average of pathogen (green), of immune effector (red), and of immune memory (blue) as a function of generations . Parameter values: maximal total number ; , , and . For average (below threshold value, immune effector inactive): , . For average (above threshold value, immune effector active): , . For average (below threshold value, pathogen not seen by immune system): , , , , , and . For average (above threshold value, pathogen seen by immune system): , , , , , and  .