Lymphocytes are white blood cells that help the body fight infection and disease. The healthy range for an adult is between 1,000 and 4,800 lymphocytes per microliter (µL) of blood. Doctors will ...

Patients are taking part in a trial that scientists hope could ultimately lead to a cure for rheumatoid arthritis. The ...

T cells are white blood cells that are important for adaptive immunity. They have unique cell surface receptors that are generated by randomly assorting genes. These receptors allow T cells to ...

What Is B-Cell Lymphoma? B-cell lymphoma is a cancer that forms in your white blood cells called lymphocytes. These cells are made by your lymphatic system, which plays an important role in immunity.