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.
Leukemia. Leukemia is cancer of the blood cells, usually affecting the white blood cells, which causes these cells to not work properly. There are four main types of leukemia. Leukemia can occur in either the lymphoid or myeloid white blood cells.Cancer that develops in the lymphoid cells is called lymphocytic leukemia.ymphoma is a type of cancer that originates in the lymphatic system. There are two main types of lymphoma. Hodgkinâs lymphoma, or Hodgkinâs disease, causes the cells in the lymphatic system to abnormally reproduce, eventually making the body less able to fight infection.