In some animals capable of regeneration, when a wound occurs, the blood clots and then the wound begins to heal. Before regeneration occurs, a structure made of stem cells forms. What is this type of structure?

Answer 1

The structure that forms from stem cells before regeneration occurs is called a "blastema." Blastemas are massed aggregations of undifferentiated cells that arise at the site of a wound or injury in certain animals capable of regeneration, such as salamanders and axolotls. These cells can differentiate into various cell types necessary for rebuilding the lost or damaged tissue, allowing for the regeneration of limbs, tails, and other structures.