main goals of business communication essay characteristics are uncontrolled growth of the cells in the human body and the ability of these cells to migrate from the original site and spread to distant sites. Cancer begins when genes which normally control cell division, growth and repair are damaged through mutation. Staying out of sunlight and using strong sunscreens could prevent hundreds of thousands of us from developing skin cancer worldwide annually. An alternative approach is to persuade the immune system to attack tumours, using vaccines, biological therapies such as alpha interferon or interleukin 2 and genetically altered white blood cells. For men, lung cancer mortality has been falling since 1990, mirroring a peak in popularity of smoking during the 1960s. These cells grow, divide, and die in an orderly fashion. Melanoma, a deadlier skin cancer, is less common but is increasing by around 3 a year in the. Malignant tumor cells do not produce these molecules and can break off and float away to other regions of the body.
Similarly, a prostate-specific antigen (PSA) test has revolutionised early diagnosis for this cancer in the. Identifying gaps in breast cancer research: Addressing disparities and the roles of the physical and social environment. Inner workings, a key reason why cancer patients are living longer, is that scientists now understand more clearly what happens when cells quotes from the essay self reliance turn cancerous. Doctors can increasingly intervene directly to prevent cancers. If the spread is not controlled, cancer can result in death. Chemicals causing mammary gland tumors in animals signal new directions for epidemiology, chemicals testing, and risk assessment for breast cancer prevention. The primary route of metastasis is the lymphatic system which, ironically enough, is also the body's primary system for producing and transporting white blood cells and other cancer-fighting immune system cells throughout the body. NCI (National Cancer Institute). Breast cancer is fairly common. Risks and benefits of estrogen plus progestin in healthy postmenopausal women: Principal results from the Womens Health Initiative randomized controlled trial. Breast cancer occurs when a malignant (cancerous) tumor originates in the breast.
Our goal in this section is to educate you on the basics of cancer and cancer trea tment. Possessing this knowledge will, we hope, help you to better. Breast cancer is not just a woman s disease. It is quite possible for men to g et breast cancer, although it occurs less frequently in men than in wom.
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