Source:http://linkedlifedata.com/resource/umls/id/C2698259
NCI: A monoclonal expansion of B-lymphocytes with or without the characteristic immunophenotype of chronic lymphocytic leukemia.,NCI: A condition in which a higher-than-normal number of identical B cells are found in the blood. People with MBL may develop other B-cell diseases, such as chronic lymphocytic leukemia (CLL).