What’s the difference between chronic myelogenous leukemia (CML) and chronic lymphocytic leukemia (CLL)?

What’s the difference between chronic myelogenous leukemia (CML) and chronic lymphocytic leukemia (CLL)?

Both CML and CLL are cancers of the blood and bone marrow. The difference between the two is due to where the cancer cells originate. While chronic myelogenous leukemia starts in the myeloid stem cells, chronic lymphocytic leukemia (CLL) starts in the lymphoid stem cells.