Lymphocytes are a type of white blood cell produced in bone marrow that play a crucial role in your immune system. There are several types—called T cells, B cells, and natural killer (NK) cells—that ...

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 ...

Non-Hodgkin’s lymphoma (NHL) is a group of over 60 subtypes of cancer that originate in the lymphocytes, which are white blood cells within the lymphatic system. NHL subtypes are categorized based on ...