When cancer cells travel through the body, metastases are often likely to develop. These metastases generally spread in two ways. They may metastasize via the lymphatic vessels, lymph nodes, and blood vessels into other organs. Other cells travel directly from the tumor into the bloodstream and then further throughout the whole body. These metastases are responsible for nearly 90 percent of deaths in cancer patients. Researchers at the Paul Scherrer Institute in collaboration with colleagues from the pharmaceutical company F. Hoffmann-La Roche AG have now taken a major step toward developing a drug to prevent the spread of these types of tumors.
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