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.
Related Diseases & Conditions. 1  Leukemia Leukemia is a type of cancer of the blood cells in which the growth and development of the blood cells are abnormal. 2  Pulmonary Fibrosis Pulmonary fibrosis is scarring throughout the lungs. 3  Keloid A keloid is a scar that doesn't know when to stop.