Monoclonal B-cell lymphocytosis (MBL) is when you have a high number of identical B cells, under 5,000 per microliter, for at least 3 months. It usually causes no symptoms or need for active treatment ...
As the prevalence of MBL is several hundred times more common than CLL or the NHLs of corresponding phenotype, the above studies raised the possibility that CLL and the low-grade NHLs may have highly ...