Chronic lymphocytic leukemia (CLL) is the most common leukemia in adults. It's a type of cancer that starts in cells that become certain white blood cells (called lymphocytes) in the bone marrow. The cancer (leukemia) cells start in the bone marrow but then go into the blood. In . Jun 19, · In chronic leukemia, the cells mature partly but not completely. These cells may look fairly normal, but they're not. They generally do not fight infection as well as normal white blood cells do. The leukemia cells also live longer than normal cells, build .
Nov 26, · Chronic lymphocytic leukemia (CLL) CLL is the second most common type of leukemia in adults. It is a type of cancer in which the bone marrow makes too many mature lymphocytes (a type of white blood cell). Acute lymphocytic leukemia (ALL). Aug 14, · CLL does not usually present symptoms, and older adults are more likely to be affected by it. Leukemia is a type of cancer that affects the bone marrow and Author: Claire Sissons.