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Leukaemia


Any of a group of malignant diseases in which the bone marrow and other blood-forming organs produce increased numbers of certain types of white blood cells.  Over-production of these white cells, which are immature or abnormal forms, suppresses the production of normal white cells, red cells, and platelets.  This leads to increased susceptibility to infection (due to neutropenia), anaemia, and bleeding (due to thrombocytopenia).