Monoclonal B-cell lymphocytosis (MBL) is a condition in which a person has an excessive amount of abnormal B cells, which are a type of white blood cell known as lymphocytes. The number of abnormal B ...
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 ...