1 Chronic lymphocytic leukemia is a type of cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell). 2  Leukemia may affect red blood cells, white blood cells, and platelets.3  Older age can affect the risk of developing chronic lymphocytic leukemia. Chronic lymphocytic leukemia is a type of cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell). 2  Leukemia may affect red blood cells, white blood cells, and platelets. 3  Older age can affect the risk of developing chronic lymphocytic leukemia.
At the end of July would mean within the last two weeks of July, more or less. And by the end of July means before August 1, which could mean 3 â¦seconds from now, next week, May 1, June17, July 23, etc.
To be consistent and to make weather forecasting easier, meteorologists divide the year into 4 meteorological seasons of 3 months each: 1  Spring - from March 1 to May 31; 2  Summer - from June 1 to August 31;  Fall (autumn) - from September 1 to November 30; and,