Leukemia

特許 係属中 Leukemia (American English) or leukaemia (British English) /luːˈkiːmiːə/[1] is a group of cancers that usually begins in the bone marrow and results in high numbers of abnormal white blood cells.[2] These white blood cells are not fully developed and are called blasts or leukemia cells.[3] Symptoms may include bleeding and bruising problems, feeling very tired, fever and an increased risk of infections.