19.4

1. What three types of therapy are presently the standard ways to treat cancer? The first type is Surgery, but this is dangerous since there is always a possibility that some of the cancer cells can be left behind. The second type is Radiation Therapy, which is the process of using radiation to break up cancer cells into smaller groups so they won't be as effective. The third type is CHemotherapy, which is a way to catch cancer cells that have spread througout the body and kill them.

2. What is an active form of immunotherapy? What is a passive form of immunotheraby for cancer? When cancer developes, the immune system has failed to dispose of cancer cells, even through they bear antigens that make them different from the body's normal cells. A vaccine known as Melacine contains broken melanoma cells from two different sources is under investigation against melinoma.

3. What type of p53 therapy is available? The procedure is that the injected adenovirous spreads through the cancer, and it kills tumor cells as it goes, leaving the genetically engineered virus now in clinical trials.

4. What is the rational for antiangiogenesis therapy? Two highley effective drugs called angiostatin and endostatin have been shown to inhibit angiogenesis in laboratory animals and are expected to do the same in humans. DESCRIBE THE NEW TREATMENT IN ADDITION TO THE LINK Link To Cancer Treatment:

http://www.thecancerblog.com/2005/05/10/homemade-cancer-zapper-promising-new-treatment/