Radiation therapy (also called radiotherapy) is the use of high-energy rays to damage cancer cells and stop them from growing. Like surgery, radiation therapy is local therapy; it can affect cancer only in the treated area. Radiation is sometimes used before surgery to shrink a tumor so that it is easier to remove. More often, radiation therapy is given after surgery to destroy any cancer cells that may remain in the area. It may also be given to relieve pain or other problems in patients whose tumors cannot be surgically removed. Radiation therapy is usually given on an outpatient basis in a hospital or clinic five days a week for several weeks.
"Thank you for checking in. The drug tests that we purchased have proven themselves to be an invaluable tool. We recently had to hire temporary workers to help do basic cleaning at our plant, and thanks to the "on-site" capability of screening, we were able save ourselves from some potential hazards.
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DNA & Genetics
DNA & Paternity
