| umls-concept:C0596873 | skos:definition | GO: The expansion of a lymphocyte population by cell division. [GOC:ai],CSP: activated T blasts expressing surface receptors for IL 2 proliferate in response to IL 2 produced by themselves or other T cell subsets; activated B blasts undergo clonal expansion and maturation under the influence of T cell derived lymphokines. | lld:umls |
