Leukemia--Cancer of the blood-forming tissues (bone marrow, Iymph nodes, spleen). Leukemia is characterized by the overproduction of abnormal, immature white blood cells.
Leukoplakia--White plaques on the mucous membranes of the mouth and gums; may be precancerous.
Localized Cancer--A cancer still confined to its site of origin.
Lymph--A clear fluid circulating throughout the body (in the lymphatic system) that contains white blood cells and antibodies.
Lymph Gland--Also called lymph node. These glands produce lymph. They normally act as filters of impurities in the body.