[Characteristics of the mammalian capacity of regeneration]

In spite of certain limitations of the regenerative ability in mammals, they are characterized by four types of regenerative processes: regeneration of parenchymatous organs, regeneration of parts of organs, intraorganic regeneration, intracellular regeneration. These types of regenerative processes may be called forth both by surgery and pathological factors: infection, irradiation, effect of toxic agents etc. The restoration following the destruction caused by pathological factors is an extremely widespread process and it should be paid more attention when analyzing the regenerative ability in mammals. The characteristics of the latter is complicated by the insufficient progress of comparative-evolutionary studies concerning all types of restoration, especially that caused by pathological factors.