NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,791 terms related to cancer and medicine.
Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.
- M protein
- listen (... PROH-teen)
- An antibody found in unusually large amounts in the blood or urine of people with multiple myeloma and other types of plasma cell tumors. Also called monoclonal protein.