The tiny air sacs in the lungs, where oxygen enters the blood and carbon dioxide leaves it.

Blood in the urine.

A protein that helps increase the bone marrow production of certain white blood cells called neutrophils, which fight infection.

A blood clot that forms in the veins of the leg, often caused by immobility after an operation or long-distance travel.

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

A protein found in the blood that is often higher than normal in women with ovarian cancer.

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.

Deficiency in the number or quality of red blood cells.

Measurements of the body’s pulse rate, temperature, respiration rate, and blood pressure. This indicates the state of essential body functions….