Acute Lymphoblastic Leukemia Overview

White blood cells, also known as lymphocytes, are part of the immune system and are necessary to protect the body from foreign material and harmful microorganisms. White blood cells are made in the bone marrow, the tissues inside the bones, along with all other blood cells. Acute lymphoblastic leukemia (ALL), also sometimes referred to as acute lymphocytic leukemia is the form of cancer that prevents the lymphocyte from doing its job properly.