Immune cells called B cells make antibodies that fight off invading bacteria, viruses and other foreign substances. During ...

Monoclonal B-cell lymphocytosis is when your body produces an elevated number of identical B cells. In some cases, it can develop into chronic lymphocytic leukemia. Monoclonal B-cell lymphocytosis ...

Our B cells help prevent us from getting sick. Their job is to make antibodies, immune system proteins that fight off viruses and other foreign invaders. And they make a lot of antibodies—thousands of ...

Stage 4 diffuse large B-cell lymphoma (DLBCL) is a rapidly growing lymphoma affecting at least one other organ outside the lymphatic system. Cancer is the unusual growth and spread of cells within the ...

The lymphatic system is the network of vessels, tissues, and organs that are part of the body’s immune system. Lymphoma develops in infection-fighting cells called lymphocytes that circulate through ...