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(a) Evolution in time of the four cell subpopulations (damage cells, adapted cells, repaired cells directly from damaged cells and repaired cells descending from adapted cells), with μb = 3.886 and p = 1 and no random environment. (b) Evolution in time of the four cell subpopulations when direct repair is not allowed but repair of adapted cells is, with μb = 3.886 and p = 1.
