Figure 2. Comparison of Major Aspects of Regeneration in Plants and Animals.
Descriptions of the known cellular origins, regenerative structures, and patterning mechanisms are indicated. We include also an experimental method described in animals (overexpression of transcription factors and nuclear transplantation), which allows differentiated cells to assume stem cell attributes. Whether or not these cells can contribute to regeneration of adult tissues after injury remains untested (Takahashi et al., 2007; Wernig et al., 2007).