To fight off viral and bacterial invaders, immune cells known as lymphocytes generate antibodies that specifically recognize and bind to these invaders, neutralizing them directly or marking them for ...

When melanoma spreads to the brain, the outlook for patients has historically been grim, and one of the reasons lies in how ...

For decades, cancer has been seen as a silent invader—an external force waiting to strike without warning. Treatments were framed as weapons of war, and our bodies became the battleground. However, ...

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 ...

Immunotherapy continues to show exciting promise in more effectively combating several tumor types. Many current strategies focus on ensuring the efficient delivery of active cytotoxic cells directly ...

High neutrophils and low lymphocytes can mean your body is under severe stress or fighting an infection. A neutrophil-to-lymphocyte ratio (NLR) shows how sick you are and what treatment you may need.

Lymphocytosis means you have a higher-than-usual lymphocyte count, often defined as more than 3 to 4 billion cells per liter of blood. Lymphocytes are white blood cells that help fight disease. Smudge ...

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 ...

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 ...