What Is the CD4:CD8 Ratio Test Used For? CD4 and CD8 are two types of white blood cells in your blood. White blood cells help your body fight infections. If you have HIV infection, your doctor may use ...
T-cell large granular lymphocytic (T-LGL) leukemia affects white blood cells called lymphocytes, which are part of the body’s immune system. The “T” means the leukemia starts in T cells. In someone ...