The 60 metres is a common indoor event and it is an indoor world championship event. Less common events include the 50 metres, 55 metres, 300 metres, and 500 metres which are used in some high school and collegiate competitions in the United States.
Chronic lymphocytic leukemia (CLL) Is a type of blood cancer that begins in the bone marrow Can progress either slowly or quickly depending on the form it takes Click here to access CLL statistics. What You Should Know CLL is the most common type of leukemia in adults.
1 Childhood acute lymphoblastic leukemia (ALL) is a type of cancer in which the bone marrow makes too many immature lymphocytes (a type of white blood cell). 2  Leukemia may affect red blood cells, white blood cells, and platelets.