Search: carcinoembryonic antigen (CEA)

carcinoembryonic antigen (CEA)

A protein that may be in the blood of a person with bowel cancer.

prostate specific antigen (PSA)

A protein produced by prostate cells. It may indicate prostate cancer and can be used to monitor its recurrence post treatment….


Part of the body’s immune system. Antibodies are proteins made by the blood in response to an invader (antigen) in the body. They help protect against viruses, bacteria and other foreign substances.