Lymphocytes are a type of white blood cell produced in bone marrow that play a crucial role in your immune system. There are several types—called T cells, B cells, and natural killer (NK) cells—that ...

The three major types of blood cancer are leukemia, lymphoma, and myeloma. All three types usually affect the growth and function of white blood cells. Leukemia affects immature white blood cells, ...

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.