Plasmocytes are the white blood cells responsible for antibody production. Plasmocytes are found in the bone marrow, lymph nodes and spleen, but not in the blood.

What are lymphocytes do?

Lymphocytes are cells that circulate in your blood that are part of the immune system. There are two main types lymphocytes: T cells and B cells. B cells produce antibody molecules that can latch on and destroy invading viruses or bacteria.

What type of cancer is plasma cell myeloma?

Multiple myeloma is a cancer that forms in a type of white blood cell called a plasma cell. Healthy plasma cells help you fight infections by making antibodies that recognize and attack germs. In multiple myeloma, cancerous plasma cells accumulate in the bone marrow and crowd out healthy blood cells.