antithymocyte globulin (AN-tee-THY-moh-site GLAH-byoo-lin)
Serum from blood that contains antibodies that bind to human T cells. Antithymocyte globulin is given to a patient before a stem cell transplant to kill T cells and lower the risk of graft-versus-host disease (GVHD). It is also used to treat GVHD and after a kidney transplant to help keep the body from rejecting the kidney. Also called antilymphocyte globulin.