Hodgkin’s lymphoma is a type of cancer that starts growing in the white blood cells of the immune system. There are two different types and five subtypes, each with different characteristics.

Chronic lymphocytic leukemia (CLL) affects cells that become lymphocytes. Monitoring the number of lymphocytes in the blood is important for many aspects of this form of cancer. A healthy adult ...

Lymphocytes are major cellular components of the adaptive immune system whose main functions are to recognize non-self-antigens and generate immune responses for eliminating specific pathogens. The ...

DEAR DR. ROACH: I am a female and almost 75 years old. My vital signs are always normal, and I am active, but slightly overweight. I get quarterly blood draws, and every reading is in the normal range ...

Intraepithelial lymphocytosis is an elevated white blood cell count in your gastrointestinal tract. It can be a sign of celiac disease, Crohn’s disease, or other gastrointestinal conditions. The ...