| Term Name: | pro-B cell | 
|---|---|
| Synonyms: | pro-B lymphocyte, pro-B-cell, pro-B-lymphocyte, progenitor B cell | 
| Definition: | A progenitor cell of the B cell lineage, with some lineage specific activity such as early stages of recombination of B cell receptor genes, but not yet fully committed to the B cell lineage until the expression of PAX5 occurs. | 
| Appears at: | Unknown | 
| Evident until: | Adult (90d-730d, breeding adult) | 
| Ontology: | Anatomy Ontology [ZFA:0009349] | 
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