Short glossary

● B cell: a type of white blood cell that help fight infection

● Bone marrow: the spongy, inner part of bone where blood cells are made

● CLL: chronic lymphocytic leukemia

● CT scan: a scan that takes a series of X-rays to build a 3D picture of the inside of the body

● DNA: deoxyribonucleic acid (genetic material)

● Hematologist: a specialist in diseases of the blood

● Hemoglobin: oxygen-carrying component of red blood cells

● Leukemia: a type of cancer of the blood or bone marrow

● Lymph node: part of the immune system that filters and catches foreign particles in the body

● Lymphocytosis: an increase in the number of white blood cells

● Malignant: a cell multiplying without normal levels of control

● Oncologist: a cancer specialist

● Pathologist: someone who tests samples to diagnose a disease

● Platelet: a component of the blood that helps it to clot

● Tumor: a swelling of a part of the body caused by an abnormal growth of tissue