In newts and lizards, healed body parts de-differentiate to blastema that can make new tissues {regeneration, biology}|. Animal body-part regeneration has first morphallaxis and then epimorphosis. Dermis and muscle, not bone or epidermis, cells specify positional information. Regeneration happens in quickest way possible.
In lower vertebrates, injured optic-nerve fibers regenerate to same brain target cells. In flatworms, serotonin and dopamine stimulate regeneration by increasing adenylate cyclase activity and altering DNA and RNA synthesis.
Biological Sciences>Zoology>Regeneration
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Date Modified: 2022.0224