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.
Types of leukemia. There are four main types of leukemia: 1  Acute myeloid leukemia (AML). 2  Chronic myeloid leukemia (CML). 3  Acute lymphocytic leukemia (ALL). 4  Chronic lymphocytic leukemia (CLL).hronic leukemia cells do not mature all the way, so they are not as capable of defending against infections as normal lymphocytes. Acute leukemia cells begin to replicate before any immune functions have developed.