Description. Return the matrix obtained by converting all the variables in a data frame to numeric mode and then binding them together as the columns of a matrix. Factors and ordered factors are replaced by their internal codes.
There are four main types of leukemia â acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL) and chronic myeloid leukemia (CML) â as well as a number of less common types.here are four main types of leukemia â acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL) and chronic myeloid leukemia (CML) â as well as a number of less common types.
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.