It is designed to recognize specific proteins that are found on the surface of some lymphoma cells.

A bone marrow aspiration and biopsy is usually done to find out if lymphoma cells are present in the bone marrow.

For example, an exquisitely sensitive test known as polymerase chain reaction can detect one lymphoma cell among one million normal cells.

Studied spread of cancer using genes from a lymphoma cell.

Ibritumomab and tositumomab deliver radiation directly to lymphoma cells using monoclonal antibodies.

The monoclonal antibody recognizes specific proteins that are found on the surface of some lymphoma cells.

The radiation attached to the antibody also kills lymphoma cells that are nearby.

Dr. Hsu takes an idiotype protein from a biopsy of the patient's lymphoma cells and generates it in the lab over several weeks into large quantities.

Other lymph node areas on the same side of the diaphragm may also contain lymphoma cells.

Over time, lymphoma cells may replace the normal cells in the bone marrow.