Colon Cancer Biomarkers (IMAGE) American Chemical Society Caption With colon cancer a leading cause of cancer death, scientists have discovered two blood proteins that may help predict whether the disease will spread. Credit Wikimedia Commons, American Cancer Society Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.