[On cyclic rejuvenation of life in change of generations (author's transl)].

Various cellular processes are discussed which might be able to reduce in protozoa as well as in higher organisms the accumulation of "errors" in protein synthesis by the interplay of error accumulation and cell division frequency or by katabolic effects after a generative process of one kind or another. Some of these processes also may be regarded as decisive for the time dependence of mass growth of higher organisms.