When a child has leukaemia, control of blood cell production breaks down. The bone marrow - the soft tissue in the middle of our bones where all our blood cells are made - makes lots of abnormal white blood, or leukaemia cells. These never mature into proper white blood cells, vital to a healthy immune system, and so children with leukaemia are at more risk of infection.
September is international Childhood Cancer Awareness Month. Find out more about what Leukaemia & Lymphoma Research are doing to help raise awareness and much needed funds to fight blood cancers in children.
Read about research we're funding to beat childhood leukaemia.