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 ...
Lymphocytes are white blood cells that help protect the body from infection and disease. High or low numbers of lymphocytes may signal a condition, such as an infection, leukemia, or immune deficiency ...