| Name: | blastema | 
|---|---|
| Synonyms: | regeneration blastema | 
| Definition: | A regenerating tissue composed of a proliferative mass of undifferentiated progenitor cells from which new differentiated structures arise. | 
| Ontology: | Anatomy Ontology [ZFA:0001270] | 
| Name: | mesenchymal cell | 
|---|---|
| Synonyms: | mesenchymal cells | 
| Definition: | A cell that normally gives rise to other cells that are organized as three-dimensional masses, rather than sheets. | 
| Ontology: | Anatomy Ontology [ZFA:0009081] |