Leukemia (American English) or leukaemia (British English) is a group of cancers that usually begin in the bone marrow and result in high numbers of abnormal white blood cells. These white blood cells are not fully developed and are called blasts or leukemia cells.he exact cause of leukemia is unknown. Different kinds of leukemia are believed to have different causes. Both inherited and environmental (non-inherited) factors are believed to be involved. Risk factors include smoking, ionizing radiation, some chemicals (such as benzene), prior chemotherapy, and Down syndrome.
Stormwind City. Audrey Burnhep[69.6, 25.8] is the primary Battle Pet Trainer for the Alliance, located under a large tree just outside the main Stormwind City walls by the big body of water near the Eastern Earthshrine portals and dragon turtle breeder.
On the morning of Tuesday, April 20, 1999, Harris and Klebold placed a small fire bomb in a field about three miles south of Columbine High School, and two miles south of the fire station. Columbine: 10 Years On â slideshow by The First Post. 2  2011 interview with survivor Brooks Brown.  3 Haunted By Columbine The killing of twelve students and a teacher at Columbine High School in 1999 continues to shape how we view and understand school shootings today.