The process in which a precursor cell type acquires the specialized features of an immature B cell. [ http://www.ncbi.nlm.nih.gov/pubmed/16551251 GOC:jal https://www.worldcat.org/search?q=bn%3A0781735149 ]
Synonyms: immature B-lymphocyte differentiation immature B lymphocyte differentiation immature B-cell differentiation
Term information
Note that immunologists typically use the word 'development' to refer to cells of B or T cell lineages undergoing the process that GO describes as 'cell differentiation'.