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Leukemia is a type of cancer that harms the body's ability to make healthy blood cells. It starts in the bone marrow, the soft center of various bones. This is where new blood cells are made. There are three main types of blood cells:
The most common treatment options are chemotherapy and radiation therapy. In some cases, bone marrow transplantation has been found to be useful. Leukemia is a type of cancer of the blood cells. White blood cells are a component of the blood.They help the body to fight against infections. When a person is infected with leukemia, the DNA in the cells mutate in such a way that a large number of immature white blood cells are produced in the body.igns and symptoms of leukemia. The common signs and symptoms of the different types of leukemia are as follows: 1  Leukemia is a cancer that affects the bone marrow. 2  It gradually hampers the proper functioning of the bone marrow.