More than 250,000 people are living with, or in remission from, leukemia in the United States today. Treatments for leukemia have come a long way since the early 1900s when the primary therapy for the disease was arsenic.
Adult acute lymphoblastic leukemia (ALL) is a type of cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell). Blood cell development. A blood stem cell goes through several steps to become a red blood cell, platelet, or white blood cell.