They specifically looked at the blastema, a structure that forms at a limb's stump.
From the sciencedaily.com
The injured spiny mice formed masses of cells that looked and behaved much like a blastema.
From the newscientist.com
When an axolotl loses, for example, a leg, a small bump forms over the injury called a blastema.
From the sciencedaily.com
This mass of undifferentiated cells is known as a blastema.
From the sciencedaily.com
Poss believes that when a portion of the heart tissue is removed from zebrafish, a blastema forms at the site of injury.
From the sciencedaily.com
They could then determine the fate of the grafted green cells in the emerging blastema and replacement tissue.
From the sciencedaily.com
Re-route a nerve to the site so it will pump out critical chemical signals that promote the creation of blastema cells.
From the denverpost.com
A blastema is a structure made up of rapidly dividing immature cells with the potential to become different tissues.
From the sciencedaily.com
Instead of originating from the metanephrogenic blastema, the collecting duct originates from the ureteric bud.
From the en.wikipedia.org
More examples
A mass of undifferentiated cells from which an organ or body part develops
A blastema is a mass of cells capable of growth and regeneration into organs or body parts. Historically blastema have been thought to be composed of undifferentiated pluripotent cells, but recent research indicates that in some organisms blastema may retain memory of tissue origin. ...
Cells one step beyond the uninduced mm described above: those cells near the branching ureteric bud in very young kidneys and in the cortex of older ones (see reference above). ...
Pl blastemas or blastemata) /blas-TEEM-uh/ The bud from which a regenerating limb develops.
An undifferentiated mass of animal cells that later forms a structure or organ either embryologically if through regeneration, for example the head of a flatworm.