Assertion: tumor marker | /r/HasProperty | substance
Facets:
value: often
type: DEGREE
Source sentences:
text: A tumor marker is a substance that is made by the body because a cancer is present, or it can be made by the cancer itself.
text: A tumor marker is a substance found in your blood, urine, or body tissue.
text: Tumor markers are substances found in the blood.
text: Tumor markers are substances present in the blood when you have cancer.
text: Tumor markers are substances that are released by cancer cells or produced by the body in reaction to a malignant tumor or benign condition.
text: Tumor markers are substances, often , that are produced by the cancer tissue itself or sometimes by the body in response to cancer growth.
text: They are typically substances that are released into the circulation and thus measured in the blood.
text: Tumor markers are substances made by cancer cells or by normal cells in response to cancer in the body.